[blam]

"This terrorist sniper fits none of these. The targets are varied, they are not government associated, and have no similarities."

One other: Preference for a particular area. Also, not knowing the area, but, aren't most of these people in this area associated with the government in some way.

[blau993]

Also, not knowing the area, but, aren't most of these people in this area associated with the government in some way.

While there are lots of government workers in the DC suburbs (for obvious reasons, probably a higher concentration than you would find anywhere else in the country), so far as I know only one of the seven victims to date worked for the government.