This provides a convenient reason for them to meet Parks, then Hendricks, then Earl and Junior. Junior doesn't stay around very long thank goodness, hopefully he didn't leave any kids behind to pollute the gene pool either. Aliens are behind humans in the field of insect repellent technology. Girls only play volleyball in bikinis. Pesticide does not make a hotdog taste better.
Huge mosquitos are hell on ceiling fans.
On a deserted country road, in the middle of the night, never, ever, ever stop for the lunatic wearing camouflage pants. It's difficult to drive with sixty pound bugs hitting the windshield. Having your guts sucked out will turn your eyes into ping pong balls and make them pop out of your skull. Sweaty clothing is easily set on fire with a lighter. One can not expect to repair a modern geiger counter using only a flathead screwdriver.