The gal on the right is wearing chevrons - partly obscured. T/4, T/5??  

ArmyJunk advises that "the woman to the left is a  military photographer, she was the friend of the mother of a woman I know. The mother was a Air Traffic Controller, they both visited Corregidor. somewhere around here I have some pics that they took..."

The remnants of the west portal of Malinta is in the background.