Sixth grade students from the Park Maitland School in Maitland, Fla., watch as Marine One, carrying President Barack Obama, takes off from the South Lawn at the White House in Washington, D.C. as he departs for Las Vegas, Tuesday.
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Larry Downing / Reuters
Sixth grade students from the Park Maitland School in Maitland, Fla., watch as Marine One, carrying President Barack Obama, takes off from the South Lawn at the White House in Washington, D.C. as he departs for Las Vegas, Tuesday.
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Julie Jacobson / AP
Juan Manuel Marquez, from Mexico, right, connects against Manny Pacquiao, from the Philippines, with referee Kenny Bayless at left, during their fight, Dec. 8, in Las Vegas.

John Gurzinski / AFP - Getty Images
Juan Manuel Marquez, left, takes a punch from Manny Pacquiao during their welterweight fight on Dec. 8 in Las Vegas, Nevada.

Steve Marcus / Reuters
Juan Manuel Marquez of Mexico bleeds from a cut on his face during his welterweight fight against Manny Pacquiao of the Philippines at the MGM Grand Garden Arena in Las Vegas, Nevada, Dec. 8.

Eric Jamison / AP
Referee Kenny Bayless, left, calls the fight as Juan Manuel Marquez celebrates after he knocked out Manny Pacquiao, left, in the sixth round of their WBO world welterweight fight Dec. 8, in Las Vegas.

John Gurzinski / AFP - Getty Images
Juan Manuel Marquez celebrates after he knocked out Manny Pacquiao in the 6th round of their welterweight fight on Dec. 8, at the MGM Grand Garden in Las Vegas, Nevada.
AP reports: No need for Juan Manuel Marquez to impress the judges. No need for the referee to count to 10.
Marquez took care of all of his business Saturday night with a thunderous right hand that left Manny Pacquiao face first on the canvas with his remarkable career in question.
Unable to win a decision in their first three fights, Marquez won the old-fashioned way with a huge right hand that put Pacquiao down for the second time in the fight at 2:59 of the sixth round. Full story.

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Jimmie Johnson. driver of the #48 Lowe's Chevrolet, performs a burnout during the NASCAR Victory Lap on the Las Vegas Strip on November 29, 2012 in Las Vegas, Nevada.

Chris Graythen / Getty Images
NASCAR Sprint Cup Series Champion Brad Keselowski, driver of the #2 Miller Lite Dodge, and Clint Bowyer, driver of the #15 5-hour Energy Toyota, drive during the NASCAR Victory Lap on the Las Vegas Strip on Thursday.

Julie Jacobson / AP
Jeff Gordon stops for a tire change while driving down the Las Vegas Strip for the Nascar Awards Week victory lap, Thursday.

Kevin Lamarque / Reuters
Air Force One sits on the airport tarmac as U.S. President Barack Obama campaigns in Las Vegas, Nevada, Aug. 22. Obama is in Las Vegas to meet with teachers at Canyon Springs High School and will be speaking at the school as part of his reelection campaign, according to the Associated Press.
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Julie Jacobson / AP
Emergency medical technician Debra Lund, right, prepares to hang an IV bag as co-worker Stacey Kreitlow, center, inserts an IV catheter into the arm of a patient on the Hangover Heaven bus in Las Vegas on April 15, 2012. Pictures made available April 23.

Julie Jacobson / AP
A patient is seen hooked up to an IV.

Julie Jacobson / AP
The Hangover Heaven bus makes its way down Las Vegas Boulevard. The bus picked up 16 patients on its first weekend in operation.
A Las Vegas MD has opened a mobile treatment center - dubbed the 'Hangover Heaven' bus - for tourists who feel a little the worse for wear after drinking in all the nightlife Sin City has to offer. For a fee, The Associated Press reports, they get a quick morning-after way to rehydrate, rejuvenate and resume their revelry.
According to the Hangover Heaven website, a basic 'Redemption' intravenous hydration treatment comes in at $90. A premium 'Salvation' package adds vitamin supplements as well as anti-nausea and anti-inflammatory medications.
Take a look at the video below and click through to our Vitals blog to find out whether other doctors think the treatment is safe.
"Hangover Heaven," a bus equipped with IVs, is travelling the Vegas strip, offering hangover salvation to revelers a little worse for the wear after a big night out. NBC's Gabe Gutierrez reports.

Steve Marcus / Reuters
A mock-up of an electric chair is displayed during a media preview tour of The Mob Museum on Monday. The display refers to the 1944 execution of mob boss Louis "Lepke" Bucharest. The museum, in a renovated former federal courthouse and post office, will have its grand opening February 14.

Ethan Miller / Getty Images
A general view shows the "skim room," where mobsters would steal some of the cash in a casino's counting room, at The Mob Museum on Feb. 13, 2012 in Las Vegas, NV.

Ethan Miller / Getty Images
A general view of The Mob Museum on Feb. 13, 2012 in Las Vegas, NV.
The Mob museum, also known as the National Museum of Organized Crime and Law Enforcement, opens on February 14 and chronicles the history of organized crime in America and the efforts of law enforcement to combat it. Check out their official website to find out more about this museum.

Ethan Miller / Getty Images
A display of law enforcement toys and books at The Mob Museum on Monday.

Steve Marcus / Reuters
A reporter checks out an interactive exhibit during a media preview tour of The Mob Museum on Monday.

Julie Jacobson / AP
Will Lowe, of Canyon, Texas, rides in the bareback competition for a score of 82.5 and fourth place in the event during the eighth go-round of the National Finals Rodeo, Thursday, Dec. 8, 2011, in Las Vegas.

Julie Jacobson / AP
Matt Bright, of Azle, Ariz., is thrown from his horse during the bareback riding event in the eighth go-round of the National Finals Rodeo on Dec. 8 in Las Vegas.

Julie Jacobson / AP
Bullfighters try to lure the bull away from J.W. Harris of Mullin, Texas as he rolls underneath after riding for the required eight seconds in the eighth go-round of the National Finals Rodeo, on Dec. 8 in Las Vegas. Harris took first place in the bull riding event.
Get the complete results of the National Finals Rodeo in Las Vegas.
Even as night fell, the pace of weddings held in Las Vegas today didn't let up. In the video below by msnbc.com's David Friedman, watch wave upon wave of wedding parties arrive and leave the Graceland Wedding Chapel as day turned to night using time lapse photography. The chapel, which opened in the 1950s, performed more than a hundred wedding ceremonies today.
For some couples, they considered the day lucky, or it held special meaning from their past. For others, getting married today was just plain practical. When Ryan and Christina Davis were asked why they chose 11/11/11 to get married, Christina replied, "So he wouldn't forget our anniversary."

Jim Seida / msnbc.com
The south Florida couple were one of thousands of marriages in Las Vegas today and they are shown above, fifth and sixth from left, surrounded by friends and family as they pose for photos in front of the Welcome to Fabulous Las Vegas sign at the far southern end of the Las Vegas strip on Friday night.
More 11/11/11 Vegas weddings coverage:

Jim Seida / msnbc.com
A newlywed couple travels the Grand Canal by gondola inside The Venetian in Las Vegas.

Jim Seida / msnbc.com
A wedding party prepares for portraits underneath an artificial sky in St. Mark's Square at The Venetian in Las Vegas on Nov. 11.

Jim Seida / msnbc.com
After ordering a post-wedding pizza, newlyweds Anthony Napoliano and Susie Chesshir wait with their sons Frankie, 5, and Donnie, 2, at the L.A. Italian Kitchen at The Venetian in Las Vegas, on Nov. 11.
More 11/11/11 Vegas weddings coverage:
Gord Noren and Nicole Noren, both from Warren, Manitoba, dance in the parking lot of the Howard Johnson hotel while Elvis impersonator Eddie Powers sings. The Norens had just gotten married at a chapel inside the Howard Johnson, and gathered with friends, Elvis, and a 1956 Cadillac to celebrate the occasion.

Jim Seida / msnbc.com

Jim Seida / msnbc.com
"We've been planning this since January 2, right after New Years," Gord Noren says. "We were hung over and said, 'Let's get married!'."

Jim Seida / msnbc.com
Why 11/11/11? "It's all ones... We knew we wouldn't forget our anniversary," he said. Gord Noren literally married the girl next door, as he bought a house next door five years ago.

Jim Seida / msnbc.com
More 11/11/11 Vegas weddings coverage:
A marriage license issued every two minutes
Picking the date before the man

Jim Seida / msnbc.com
"We've got two kids and have been married for 23 years," says Gayle Borawski. She and her husband, Suave, both from Chicago, came to Las Vegas to renew their vows at the drive-thru window of The Little White Wedding Chapel on 11/11/11. "I didn't want to wait until 12/12/12," Borawski says, adding, "That number is too cold."

Jim Seida / msnbc.com
John Hamelin of Las Vegas waits behind the wheel of a 1965 Cadillac for his next pair of newlyweds at The Little White Wedding.

Jim Seida / msnbc.com
"They're pretty excited. All things considered, they're pretty happy, which is good because you don't get to see too many happy people these days," says John Hamelin of the newlyweds he drives around in this 1965 Cadillac Convertible. "The way things are, what do you have to smile for?" Hamelin says, "You've got to worry about losing your job if you haven't lost it already. I've been out of work for about three-and-a-half years." Hamelin was a long-haul trucker before losing his job. He just picked up the occasional job for the Little White Wedding Chapel and hopes he can drive for them a few times per week.

Jim Seida / msnbc.com
Newlywed Jessika Anderson of Tulsa, Okla., stands outside The Little White Wedding Chapel in downtown Las Vegas on Friday, 11/11/11, with her mom Jamie Rubeck, right, and her sister Jodi Rubeck, left. "My fiance calls or texts me every day at either 11:11 AM or 11:11 PM," Anderson says. "We tried to get married at 11:11, but they were too busy and we lost our slot."
More 11/11/11 Vegas weddings coverage:
A marriage license issued every two minutes
Picking the date before the man