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Massachusetts State Police

Massachusetts State Police

Above: Infrared images released by the Massachusetts State Police Air Wing appear to show Boston Marathon bombing suspect Dzhokhar Tsarnaev on Friday, April 19, hiding in a Watertown, Mass., resident's boat in the resident's backyard. Below: A police vehicle uses a boom to inspect the boat.

Related story: Secret weapon? How thermal imaging helped catch bomb suspect

Massachusetts State Police

Massachusetts State Police

Slideshow: Search for suspects in Boston Marathon bombings

Jared Wickerham / Getty Images

Cheers filled the streets after a Boston Marathon bombing suspect was captured alive but wounded Friday night — following a daylong manhunt that shut down the city.

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Jessica Rinaldi / Reuters

SWAT teams search for the remaining Boston Marathon bombing suspect in Watertown, Mass., on April 19.

CJ Gunther / EPA

A resident watches as police search an apartment complex in Watertown, Mass., on April 19.

NBC News reports: Boston and its surburbs, universities and transit system were on total lockdown Friday as police hunted for marathon bombing suspect Dzhokhar Tsarnaev -- on the loose after his terrorist brother was killed in a stunning chain of events that left one cop dead and another injured, officials said. Read full story

Also on PhotoBlog:

• Life disrupted: Eerie scenes after Boston Marathon bombings
• Marathon's deadly moments captured from office building above finish line
• Anatomy of a bombing: Photos show battery, wires used in device

Slideshow: Search for suspects in Boston Marathon bombings

A tense night of police activity just days after the Boston Marathon bombings caused police to converge on a neighborhood outside Boston, where residents heard gunfire and explosions.

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Charles Krupa / AP

A woman looks out a window at her home as police start to search an apartment building in Watertown on April 19.

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Jessica Rinaldi / Reuters

Boston Bruins Dennis Seidenberg observes a moment of silence for the victims of the Boston Marathon bombings before the start of an NHL hockey game against the Buffalo Sabres at TD Garden in Boston, Mass., on April 17, 2013. This is the first sporting event to be held in Boston after the explosions that killed three and injured more than one hundred at the Boston Marathon.

Jim Rogash / Getty Images

A Bruin fans shows her support for the efforts of the Boston police and firefighters before a game Wednesday night.

Just two days after the tragic bombing of the Boston Marathon, hockey fans gathered at the city’s TD Garden to cheer for their team.

Attendees accepted and dealt with heightened security as they entered the building and made way to their seats, and the crowd cheered as the color guard brought the flag onto the ice.

Then, thousands of voices joined together for one of the most powerful renditions of the national anthem you’ll ever hear. Play this NBC Sports video to see it happen.

Elise Amendola / AP

A fan wearing a United States flag raises his arms to be checked on the way into TD Garden prior to the game.

AP

This sonar image provided by GK Consulting & AWS Expeditions/Joe Mazraani, shows a World War II-era German submarine U-550, found by a team of explorers Monday, July 23, 2012, on the floor of the Atlantic Ocean 70 miles south of Nantucket Island, Mass.

NBC News staff and wire services reports: Divers have discovered a World War II-era German submarine nearly 70 years after it sank under withering U.S. attack in waters off Nantucket. The U-550 was found Monday by a privately funded group organized by New Jersey lawyer Joe Mazraani.

"They’ve looked for it for over 20 years,” Mazraani, a shipwreck diver, told The Boston Globe. “It’s another World War II mystery solved.” Continue reading the full story.

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Brian Snyder / Reuters

A zombie chases a runner on the "Run for Your Lives" 5K obstacle course race in Amesbury, Mass. on May 5.

"Run for Your Lives" 5k zombie races pit runners against man-made and natural obstacle courses and zombies, who chase them down and try and take "health" flags off the runners belts. Learn more about the races at runforyourlives.com.

Related Link:

• More images from the Reuters zombie run photo shoot

Brian Snyder / Reuters

A zombie greets runners arriving for the "Run for Your Lives" 5K obstacle course race in Amesbury, Mass. on May 5.

Brian Snyder / Reuters

Runners are chased by a zombie at the "Run for Your Lives" 5K obstacle course race in Amesbury, Mass. on May 5.

Brian Snyder / Reuters

A zombie waits to chase runners at the "Run for Your Lives" 5K obstacle course race in Amesbury, Mass. on May 5.

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Dominick Reuter / EPA

A model rappels down the side of the Revere Hotel during a vertical fashion show in Boston on April 18.

Dominick Reuter / EPA

A model rappels down the side of the Revere Hotel during a vertical fashion show in Boston on April 18.

The Revere Hotel in Boston, Ma. celebrated its grand opening on April 18 with a vertical fashion show. The Boston Rock Gym provided the models who rappelled down the exterior of the 24-story hotel wearing outfits created by the students from the Massachusetts College of Arts and Design and by Ted Baker London.

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Dominick Reuter / EPA

A model from the Boston Rock Gym rappelling down the side of the 24-story Revere Hotel on April 18.

Dominick Reuter / EPA

A model from the Boston Rock Gym rappelling down the side of the 24-story Revere Hotel on April 18.

Steven Senne / AP

Rock climber Mike Barron, of Boston, models an outfit created by Ted Baker London as he rappels down the side of the Revere Hotel in Boston. Rock climbers and dancers modeled spring and summer creations by the designer and by students from a local design school.

David Friedman / msnbc.com

Team members check the health of dolphins before transporting them for release back into open water.

David Friedman / msnbc.com

An IFAW team carries a stranded, live dolphin off the beach at Herring River in Wellfleet, Mass.

Celebrating a small battle won in a much larger war, Misty Niemeyer and Kathryn Rose shared a high-five after successfully releasing three dolphins back into open water Monday . The staffers with the International Fund for Animal Welfare’s Marine Mammal Rescue and Research team, aided by other organizations and a small army of volunteers, have struggled to keep pace with a spate of dolphin strandings on Cape Cod over the last month.

David Friedman / msnbc.com

Misty Niemeyer and Kathryn Rose, celebrate successfully releasing three stranded dolphins back into open water on Monday, Feb. 13, in Bourne, Mass. Strandings are normal on Cape Cod in winter, but this year is the highest number on record, according to the International Fund for Animal Welfare.

As of Tuesday, IFAW has cataloged 177 common dolphins strandings since Jan. 12 -- of those, 106 were found dead and 71 found alive. They attempt to rescue all live animals and get them back to open water, and at least tag the dead ones. It may be months before researchers understand why the numbers are so high this year, but right now the IFAW team is just trying to keeping up.

In the two days I spent photographing them for the video above, their phones rang dozens of times with people calling in dolphin sightings. Many were dead animals that had already been tagged, but whenever a call came in about a live dolphin they jumped into action. Niemeyer says of this winter's onslaught, "Our staff’s getting a little tired and little weary, and unfortunately it doesn’t look like it’s going to slow down at any point. We’ve had live animal strandings almost every day for the last week at least, and almost every day, or every other day, for the last month. So there really isn’t any sign of it slowing down yet."

Read more about the efforts of the International Fund for Animal Welfare’s Marine Mammal Rescue and Research team here.

David Friedman / msnbc.com

IFAW staff and volunteers prepare to release three rescued dolphins back into open water in Bourne, Mass., on Monday.

Julia Cumes / AP

Two stranded common dolphins wait to be transported by an International Fund for Animal Welfare team at Herring River in Wellfleet, Mass., Jan. 19. The dolphins are two in the latest batch of dolphins found, bringing a total of over 80 stranded on Cape Cod shores in the last week.

More than 80 common and Atlantic white sided dolphins have been stranded along 25 miles of Cape Cod coastline since Jan. 12 according to International Fund for Animal Welfare (IFAW).

The animal welfare advocates are perplexed by the current situation along the scenic shores south of Boston because it is one of the largest cases of dolphins stranding themselves in years.

January through April is the typical season for multiple beaching of dolphins and Cape Cod is among the top locations for the phenomenon worldwide, but Katie Moore, manager of IFAW's marine mammal rescue and research said this pattern is unlike past years.

"It feels like stranding after stranding after stranding," she said. "It's definitely out of the ordinary."

Despite many groups being stranded, Boston.com reports the IFAW has helped more than 300 dolphins swim out of Wellfleet harbor.

Reuters contributed to this report.

Related links:

• Keep up with IFAW's dolphin saving efforts

Julia Cumes / AP

An International Fund for Animal Welfare (IFAW) team carries a stranded common dolphin to a waiting vehicle while another waits to be rescued at Herring River in Wellfleet, Mass., Jan. 19.

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