A neighbor directly across the street, Brock Parrish, said Dykes usually wore overalls and glasses and his posture was hunched-over. He said Dykes usually drove a run-down "creeper" van with some of the windows covered in aluminum foil.
Parrish often saw him digging in his yard, as if he was preparing to lay down a driveway or building foundation. He lived in a small camping trailer there and patrolled his lawn at night, walking from corner to corner with a flashlight and an assault rifle.
Court records showed Dykes was arrested in Florida in 1995 for improper exhibition of a weapon, but the misdemeanor was dismissed. The circumstances of the arrest were not detailed in his criminal record. He was also arrested for marijuana possession in 2000.
Associated Press writers Phillip Rawls in Midland City, Bob Johnson in Montgomery, Ala., and AP researcher Rhonda Shafner in New York contributed to this report.