In order to give Roselyn Sanchez the proper posture, John McTiernan had her wear a 50-pound bag of sand on the front of her belt while at the same time told her to imagine herself as a Las Vegas showgirl.
"Everyone tells the story differently." This is a reference to the story in Rashômon (1950) where people give varying accounts of the same event
Every time the story of the bunker is retold, each person has a different partner.