FBI offers reward for 1970 bomber.

[Think. Again.]

7. welllll....

...with all the cameras that are in that neighborhood, I find it ...improbable... that she's not on tape for 98 percent of the time she spent walking around planting bombs and stuff, including getting out of and into whatever vehicle she might have used, or even whatever hotel or, more likely, whatever apartment building, townhouse, or office building she came from and ended up in.

It's very unlikely anyone could get away with being invisible while walking around that high security area, and I'd guess that the modern FBI has some fairly useful tools for identifying people, even from video.