First you gotta get it on the CH-47. . . and my impression is this was somewhat of a covert operation. Moving 6 tons of gold around is not gonna be covert. . . nor is landing and taking off in a CH-47.
Covert insert for the benefit of catching anyone there. The boys didn’t walk in. It was coordinated with the Thais. D-boys could hump 6 tons of anything in a few minutes. Once there the ‘covert’ portion is over. When you have more than a 5 man team, the only thing that could be covert is the insertion.