Leonard Weaver told us via Twitter:

Weaver_castilloTodd Herremans via Twitter:

Congrats to Juan Castillo! He's worked hard and earned it… I hope the defense is ready to work! Lol

Omar Gaither via Jeff McLane:

I didn't know Juan knew defense.

Asante Samuel, also via Jeff McLane:

The offensive line coach?

Darryl Tapp via Jonathan Tamari: 

That's shocking.