[robowombat]

These people are regular heavy suit divers, USN given some extra UD training at PC. Can’t people intuit anything? Is everyone completely ignorant of how the armed forces work?

[Right_Wing_Madman]

These people are regular heavy suit divers, USN given some extra UD training at PC.

More likely it was a Navy EOD team. Setting up explosives 300 feet underwater is easy work for them. It's what they do for a living.