I say Grumpy should throw the crowbar at the closest active drone.
8
Then after Grumpy throws the crowbar, Dodger should slightly come out from the cover, shoot the active drone farthest from the from him, and then get behind the cover again.
14
Well thought out
Crowbar doesn't need a roll though it's dodge based.
ROLL GET FOR DODGER, 18!

A DRONE FIRES AT ULTIMA, IT MISSES
GRUMPY THROWS THE CROWBAR, THE DRONE DOES NOT ATTEMPT TO DODGE IT, IT WILL BE HIT NEXT TURN
DODGER SHOOTS THE DRONE, IT TAKES 1 DAMAGE!
ULTIMA CAN NOW ATTACK