It's friendlier, more intimate and thus more candid and open, and this unique atmosphere is best seen during the planning phase of an operation. Rank doesn't count in planning a mission. All that matters is inventiveness and originality. Everyone throws out ideas, in a round-table brainstorming session.
Nothing is rejected out of hand, as the best ideas are set aside while more are raised.
Eventually, the best idea stands out. Helicopters were quickly ruled out. That in itself would be no simple matter to organize. We'd need a dry landing on the beach, in rubber boats that we'd have to row as we neared the coastline. Beirut in those days was no war zone.