Does Blackwater Employ African-Americans?

Armed Blackwater soldiers patrolling the streets of New Orleans

Blackwater USA is the private security firm, some would say mercenary army, making billions of dollars off government contracts and the Iraq War.

I've never seen any African-Americans in any of the Blackwater footage I've seen, so I'm curious as to whether Blackwater USA employs any African-Americans, and if so, how many and in what positions?