Visible crew/equipment: Near the beginning of the film when the police car explodes and flips over, you can blatantly see stunt wires used to aid in flipping the car. (00:02:45)
Visible crew/equipment: When the Predator is attacking the Jamaicans in the penthouse, you will see the guy who gets pinned to the wall with the net propelled backwards. We are led to believe that it is the force of the Predator's weapon - not so - it is the bungie cable attached to his trousers. (00:24:55)
Visible crew/equipment: When Jerry is fighting the Predator in the subway car, watch closely behind him when he runs out of ammo. He bends over to pick up a knife, and you can see two distinct shadows on the wall in the strobing light. One is his, and the other belongs to the camera man standing a few feet to the side. (00:57:45)
Visible crew/equipment: Towards the end of the movie, the Predator is climbing up the side of a tall building. Danny Glover jumps in his car to take off after it. As he starts to drive away, towards the left you can see the shadow of an elevated cameraman/equipment. (01:03:55)
Answer: As a reward for besting the Predator in combat, he proved himself a fierce warrior worthy of praise and the gun was a token of their respect for his strength.