Go onto the Colorado level.
Behind the big house there are 3 soldiers doing press ups being led by a commanding officer.
There will be an apricot on the floor by the commanding officer, pick it up and then go to the radio located to the right of the 3 soldiers.
Aim the apricot at the commanding officer (it won't lock on as if you will throw it at his head) and once done turn the radio on.
Trophy will pop!