Eating usual ice cream with m&ms with dad watchin' cops (when that was still on) with dad, sister was comin' home from speech meet. We hear a light rumble, like a big farm truck. Sister calls on her nokia brick phone, tells dad there's a glowing truck outside. Says there was a man sneaking next to the house, who she had scared off. Said he ran to his truck, to which we ran to see (gun in hand, of course, we aren't stupid or foolin' around). In the brief 15 seconds, we saw the truck shift silently with the same rumble as before, then drive off to the north. Truck was glowin' a transparent dark/ light leaf green, was like a military transport of the 1950s or 40s, and had a 45 degree angled "V" shape antennae on top of the cab. Man was the man was the same appearance as the truck, see through/ green, ran across our ditch into the truck to "start it up". Reported to Davenport "Sheriff" (not sure if Davenport even had a sheriff then), he came in his truck haulin' snowmobiles (hotter than hell out!) Said he and everyone he could in town to hunt down the truck. We all searched, didn't find anything in the surrounding towns, got neighboring towns/ counties searching all possible routes, closed in on where the truck definitely should have been: it was nowhere to be found. Disappeared.