[Prisen]

Special forces operating in extreme conditions have no qualms about leaving someone, if necessary.

[bootload]

Maybe. Foreign legion [0], Royal Marines [1] say otherwise. It's more about "unity & team" rather than "I".

[0] http://french-foreign-legion.com/french_foreign_legion_code....

[1] http://www.royal-navy.mod.uk/royalmarines/history-and-ethos/...