Active-duty Navy SEAL Matt high-fives the crowd after arriving on the shore of Sebago Lake in Standish after a 13-mile swim to raise money for Camp Sunshine in Casco on Thursday. Only the first names of the SEALs were given, which is standard military procedure because of their active-duty status.

Chad and Mike wait in the water about 2.5 miles from the finish of their trek in Standish on Thursday. The four active-duty navy SEALs swam the 13-mile length of Sebago Lake for a Camp Sunshine fundraiser to send dozens of military families to Camp Sunshine, a Maine retreat for children with life-threatening illnesses and their families.

From left, Carmen Footer, JoAnn Miller and Elaine Greene, known as the Freeport Flag Ladies, stand on the shore of Sebago Lake to welcome the Navy SEALs after their 13-mile swim on Thursday. The SEALs swam the length of Sebago Lake to raise money for Camp Sunshine to send dozens of military families to the Maine retreat for children with life-threatening illnesses.

Four active-duty Navy SEALs swim 13-mile length of Sebago Lake for a Camp Sunshine fundraiser on Thursday.

Chad reaches for an energy bar during his 13-mile swim across Sebago Lake on Thursday.

A crowd gathers on the beach to welcome the Navy SEALs after their 13.5-mile swim in Sebago Lake to raise money for Camp Sunshine on Thursday.

Maine game wardens accompanied the SEALs during their swim on Thursday in Sebago Lake. The wardens were there to provide safety for the swimmers as well as show support for the Camp Sunshine fundraiser.

A United States Coast Guard helicopter flies overhead as active-duty Navy SEALs, from left, Mike, Lew, Matt and Chad, arrive on the shore of Sebago Lake after a 13-mile swim to raise money for Camp Sunshine on Thursday. Only their first names were given because of their active-duty status.

Active-duty Navy SEAL and the Camp Sunshine fundraiser organizer Mike is ushered into a changing room after arriving on the shore of Sebago Lake following a 13.5-mile swim to raise money for Camp Sunshine in Casco on Thursday.

From left, Walter Braley, Bob Akins, Chuck Whynot, Dennis Marshall and Willie Goodman, from VFW 10643 in Windham, take the flags presented during the Navy SEALs fundraising swim on Sebago Lake in Standish on Thursday.