I'm relatively new to the game and just died to a guy I couldn't see. I was at that big airstrip with the hangers and I was prone in the grass with a ghillie. There where 3 maybe more vehicles on the runway and I was waiting to see who owned them. I figured it would be a big group but there was no one around. Suddenly I hear panting next to me. I turn and the grass is flattening as if someone is crawling through it but I can't see anyone. The thing keeps on coming till its right next to me and then stops. I still can't see one but can here the player panting right next to me. I wait for a while and when it moves again I start to shoot. It shoots back and I get killed. So, when you are prone in the grass are you invisible? The fact that he didn't shoot until I started made me think perhaps he couldn't see me either. Then I thought, with all the abandoned vehicles, he might be a hacker just having some fun with me. Sorry if it's a bit of a stupid question.