Did SEAL astronauts/candidates always wear a trident on their suit? Do any other ex-military astronauts/candidates wear insignias?

Was watching an interview with candidate Jonny Kim and saw he had a patch with his SEAL trident on it on the blue candidate suit he had on.

Submitted January 02, 2019 at 01:56PM by StandardDeparture http://bit.ly/2AqRoM3