. They both approached our tent and began to move along the top edge of the tent in a perfectly parallel direction as if they were following the outline of the tent. When they got to the corner of the tent they both made an abrupt 90 degree turn to continue following the other side of the tent, then made another 90 degree turn to follow the back of the tent, etc. We both stood up and got right up to the screen to watch them. My brother w