Two U.S. Navy SEALs drowned during a nighttime boat raid off the coast of Somalia last January because their personal gear was too heavy, causing them to sink almost immediately upon hitting the ...

A Navy SEAL, medical doctor and NASA astronaut lifted off for an eight-month stay on the International Space Station — and that was just one of the three crewmates on Soyuz MS-27.

Chris Cassidy is a retired NASA astronaut and United States Navy SEAL. Chris Cassidy achieved the rank of captain in the U.S. Navy. His first spaceflight was on a Space Shuttle mission in 2009. He ...

Two U.S. Navy SEALs drowned during a nighttime boat raid off the coast of Somalia last January because their personal gear was too heavy, causing them to sink almost immediately upon hitting the ...