[aristeides]

The FBI facility was targeted because, according to Johnston, it was the bureau's main counterintelligence operation at that time.

Any explanation for why the Murrah Building was first on the list?

[Fred Mertz]

Any explanation for why the Murrah Building was first on the list?

My educated guess is that it was deemed most vulnerable assuming that numerous targets were 'cased' by foot soldiers.

I think AKAL security employed only about three? folks for daytime patrols. And I think these security people covered a couple of buildings, not just the Murrah bldg.