Bulletproof glass and armed security are nothing new at medical clinics that provide abortions.

But in the wake of a deadly shootout last week at a Planned Parenthood clinic in Colorado, clinics nationwide are redoubling security efforts, checking surveillance cameras and reviewing evacuation plans.

Police say they're adding patrols to clinics to guard against those who might be inspired to mimic a shootout that killed three people and injured nine.

For the folks who work in the nation's 400-some clinics that provide abortions, it's a time of resolve and reflection about the dangers they face.

Planned Parenthood officials say their clinics are double-checking locks and reviewing security plans. But they say there are no plans to add new security, saying that health clinics shouldn't be treated like military compounds.