Patrick Semansky / AP

University of Maryland engineering student Colin Gore performs a test flight in Baltimore on Wednesday, Feb. 27, 2013, in a one-man, human-powered helicopter that he and fellow students designed and built. The team of undergraduate and graduate students hope to claim the $250,000 American Helicopter Society Sikorsky Prize, which has remained out of reach since it was first offered in 1980. In order to win, a helicopter must fly under human power for at least 60 seconds and momentarily reach an altitude of 3 meters while remaining within a square that is 10 meters by 10 meters.

Patrick Semansky / AP

University of Maryland engineering student Colin Gore prepares for a test flight in Baltimore on Wednesday.

Patrick Semansky / AP

Related story: Human-powered helicopter breaks record with 50-second flight

Patrick Smith / Getty Images

Ravens Linebacker Ray Lewis celebrates with the Vince Lombardi Trophy during the Super Bowl XLVII victory parade at M&T Bank Stadium on Feb. 5, in Baltimore.

Richard Clement / Reuters

A Baltimore Ravens fan dances in the street on the team's parade route in Baltimore on Feb. 5.

Patrick Smith / Getty Images

Fans take pictures of The Vince Lombardi Trophy during the Ravens Super Bowl victory parade in Baltimore.

Richard Clement / Reuters

Ravens quarterback and Super Bowl MVP Joe Flacco waves to the crowd gathered on the team's victory parade route in Baltimore.

Gary Cameron / Reuters

Two Ravens fans exchange high fives before a stadium victory rally in Baltimore.

Jessica Gresko, Associated Press

Thousands of Baltimore Ravens fans are cheering, singing, dancing and marching along with the team in a parade to celebrate the Super Bowl victory.

After a brief ceremony at City Hall, the parade rolled past the Inner Harbor. Players rode on a float and in flat-bed trucks and Humvees. Retiring linebacker Ray Lewis had a position of honor at the end of the procession, flanked by a mounted police unit and officers on foot. Continue reading complete story.

Slideshows:

• Super Bowl festivities take over New Orleans
• Super fans
• Super Bowl blackout
• NFL's memorable images

Steve Ruark / AP

Thousands of Ravens fans fill M&T Bank Stadium to celebrate the team's Super Bowl victory in Baltimore.

Steve Ruark / AP

Tracie Bradford, of Perry Hall, Md., consoles her daughter Leah, a student at Perry Hall High School who says she was in the school's cafeteria when a student was shot there and critically wounded on the first day of classes, Aug. 27, in Perry Hall, Md.

Steve Ruark / AP

A Baltimore County police officer speaks to a parent as students are evacuated from Perry Hall High School after a student was shot and critically wounded on the first day of classes Aug. 27, in Perry Hall, Md.

Steve Ruark / AP

Parents and students try to find each other after a student was shot and critically wounded on the first day of classes at Perry Hall High School, Aug. 27, in Perry Hall, Md.

NBC News staff and news services: A student was shot Monday morning by another student on the first day of school at a Baltimore County high school, county police said.

The 15-year-old suspect acted alone and “he did not target this victim," according to a statement from the Baltimore County Police Department.

The wounded 17-year-old student was flown by helicopter to a hospital from Perry Hall High School in Perry Hall, Md. He was in critical condition at Maryland Shock Trauma Center, a hospital spokeswoman said.  Full story.

Sam Yu / The Frederick News-Post via AP

A two-alarm fire started by a lightning strike from a thunderstorm late Friday night engulfs a home north of Frederick, Md., early June 30. The fire was reported at about 11:45 p.m., Friday during a storm system that went through the area. There were numerous reports of trees and power lines down in the area from the storms.

More coverage of the storms.

Slideshow: Storm knocks out power to millions in DC area

Mark Wilson / Getty Images

With more triple-digit heat in the forecast, millions of people in the Mid-Atlantic area were without power on Saturday after violent storms with 80-mph gusts toppled trees, cut power lines and killed six people in Virginia alone.

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Justin Sullivan / Getty Images

Former Gov. Mitt Romney greets supporters during a town hall style meeting at Wisconsin Building Supply on April 2, 2012 in Green Bay, Wis. With one day to go before the Wisconsin primary, Mitt Romney is making a final push through the state.

NBC News reports:

Darren Hauck / Reuters

Presidential candidate Rick Santorum reacts while signing a cheese head during a visit to Simon's Specialty Cheese Retail Store in Appleton, Wis.

The Wisconsin GOP primary is still a day away. And, yes, Rick Santorum could always pull off a surprise tomorrow. But it's also hard not to recognize that the general election has already begun. On Friday, Mitt Romney unveiled a new stump speech that focused exclusively on President Obama and not his GOP rivals. Then, on Sunday, Vice President Biden appeared on "Face the Nation," where he unloaded on Romney.

Also late last week, a conservative group with ties to the Koch Brothers launched a $3 million-plus TV ad campaign in battleground states, while the pro-Obama Super PAC is now up with its own response. And yesterday, Senate Minority Leader Mitch McConnell said “the chances are overwhelming that [Romney] will be our nominee. It seems to me we’re in the final phases of wrapping up this nomination.” To be sure, we might see final minor twist or turn in this GOP primary race, but with seven months until Nov. 6, the general-election train appears to have finally left the station.

Chip Somodevilla / Getty Images

Former House Speaker Newt Gingrich waits back stage while his wife, Callista Gingrich, introduces him during a campaign town hall-style meeting at the Hodson Auditorium on the campus of Hood College, April 2, 2012 in Frederick, Maryland. Md. After acknowledging it is impossible for him to win the GOP presidential nomination outright, Gingrich has vowed to stay in the presidential race even after firing a third of his campaign staff last week, taking the fight to the party convention.

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