[aristeides]

There was apparently no ballistic match between the rifle of the guy in Baltimore and the bullets in the sniping victims. But he still could have been acting as a decoy: white van, radio scanners, work route through the D.C. suburbs, Gihad in America, tarot card, sniper manual, right ammo.

[Kerberos]

" But he still could have been acting as a decoy"

Decoy or some kind of support capacity.

[99tango]

could have been the trainer.

[madison10]

...or he may be expert enough to try for the reward. If he sees the shooter, you don't think he'd want to "bag" him, thus the weapons? The girlfriend throws a clinker into this theory, though.