"The more outrageous a story is, in a lot of cases, the more it's believed. These guys do a terrible amount of damage," said Don Shipley, a retired SEAL from Chesapeake, Va., who devotes much of his time to exposing the phonies.
Sleuths expose men who pretend to be SEALs →
Mr. Shipley has denied the masses another hero.
TYRRELL: An imposter's complaint →