Clint Wasn’t Sure
After speaking to his mom, Clint went to check on Holly and whom he assumed was Drew and had said that by that time, the two were walking towards the woods. The guy was in camouflaged clothes, and was about 6 feet tall and maybe around 180 to 200 lbs. Since he couldn’t be sure whether it was actually Drew or not, he didn’t want to just shoot the guy not knowing who the guy was. But in hindsight, he most probably should have.