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A member of the United States Naval Academy freshman class shows his exhaustion at the wet and sandy station during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145909 )

Members of the United States Naval Academy freshman class lift logs during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145957 )

Members of the United States Naval Academy freshman class climb ropes on a obstacle course during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145923 )

Members of the United States Naval Academy freshman class do sit-ups at the wet and sandy station during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145953 )

Members of the United States Naval Academy freshman class race to the sand at the wet and sandy station during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145901 )

Members of the United States Naval Academy freshman class perform calisthenic exercise while wearing body-armour during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145917 )

A freshman midshipman, known as a "plebe," crawls through a muddy trench underneath barbed wire during Sea Trials, a day of physical and mental challenges that caps off the freshman year at the U.S. Naval Academy in Annapolis, Md., Tuesday, May 13, 2014. (AP Photo/Patrick Semansky) ( Naval Academy Sea Trials )

A member of the United States Naval Academy freshman class struggles as he lifts logs during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145921 )

Freshman midshipmen, known as "plebes," perform sit ups with a log across their chests during Sea Trials, a day of physical and mental challenges that caps off their first year at the U.S. Naval Academy in Annapolis, Md., Tuesday, May 13, 2014. (AP Photo/Patrick Semansky) ( Naval Academy Sea Trials )

Members of the United States Naval Academy freshman class lift logs during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145959 )

A member of the United States Naval Academy freshman class sweats as he lifts logs during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145945 )

Members of the United States Naval Academy freshman crawl under one another at the wet and sandy station during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145963 )

Members of the United States Naval Academy freshman class fight with pupil sticks during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145911 )

Members of the United States Naval Academy freshman class tread-water in a tight pack during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145955 )

Freshman midshipmen, known as "plebes," perform sit ups on the banks of the Severn River during Sea Trials, a day of physical and mental challenges that caps off the freshman year at the U.S. Naval Academy in Annapolis, Md., Tuesday, May 13, 2014. (AP Photo/Patrick Semansky) ( Naval Academy Sea Trials )

Freshman midshipmen, known as "plebes," march during Sea Trials, a day of physical and mental challenges that caps off the freshman year at the U.S. Naval Academy in Annapolis, Md., Tuesday, May 13, 2014. (AP Photo/Patrick Semansky) ( Naval Academy Sea Trials )

A member of the United States Naval Academy freshman class pushes a fake-gun through trenches at the wet and sandy station during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145939 )

Freshman midshipmen, known as "plebes," hoist sandbags above their heads while performing bicycle kicks during Sea Trials, a day of physical and mental challenges that caps off the freshman year at the U.S. Naval Academy in Annapolis, Md., Tuesday, May 13, 2014. (AP Photo/Patrick Semansky) ( Naval Academy Sea Trials )

A freshman midshipman, known as a "plebe," holds out a fake rifle as part of an exercise at Sea Trials, a day of physical and mental challenges that caps off the freshman year at the U.S. Naval Academy in Annapolis, Md., Tuesday, May 13, 2014. (AP Photo/Patrick Semansky) ( Naval Academy Sea Trials )

A member of the United States Naval Academy freshman class flips over a bar on a obstacle course during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145947 )

Jonathan Freel, center, of Houston, eats mustard in an attempt to avoid cramps during a short break in Sea Trials, a day of physical and mental challenges for freshman midshipmen, known as "plebes," that caps off their first year at the U.S. Naval Academy in Annapolis, Md., Tuesday, May 13, 2014. (AP Photo/Patrick Semansky) ( Naval Academy Sea Trials )

Daniel Smart, bottom, of Miami, Fla., winces as a fellow midshipman helps him with a leg cramp during Sea Trials, a day of physical and mental challenges for freshman midshipmen, known as "plebes," that caps off their first year at the U.S. Naval Academy in Annapolis, Md., Tuesday, May 13, 2014. (AP Photo/Patrick Semansky) ( Naval Academy Sea Trials )

A member of the United States Naval Academy freshman class crawls through trenches at the wet and sandy station during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145919 )

Members of the United States Naval Academy freshman class perform calisthenic exercise while wearing body-armour during the annual Sea Trials training exercise at the U.S. Naval Academy on May 13, 2014 in Annapolis, Maryland. (Photo by Patrick Smith/Getty Images) ( 490145951 )