Sonar Technician (ST) Rating Challenge Coin Beanie but you can't come in"

but you can't come in" is emblazoned on the door inside

a set of enlisted dolphins can be found

there is 'Fire Control Technician'

SubMerch has a PMT coin in a 'fish and bear' cut-out shape and San Diego banner

SubMerch offers up this very large round coin

Sonar Technician (ST) Rating Challenge Coin Beanie but you can't come in"Our challenge coin from SubMerch shines a battle lantern (emergency light) on those crewmembers who spend time looking for contacts (ships or submarines) in the control room or sonar shack. ST's or STS's (Sonar Technicians Sonar Technicians Submarines) on board surface ships and submarines work with computer screens and headphones to sort through all the sounds of the ocean to find the bad guys in their ships or submarines. This challenge coin