Nowak betrays more Rainbow operatives in Vegas 2 , mainly by posing falsely as an NSA agent , helping Bishop along the way for some of the campaign while actually putting Bishop in a state of danger , in order to kill him\/her , which fails . Nowak betrays more Rainbow operatives in Vegas 2 , mainly by posing falsely as an NSA agent , helping Bishop along the way for some of the campaign while actually putting Bishop in a state of danger , in order to kill him , which fails .