UFO Sighting in Fort Smith, Arkansas

This one is strange but i have a feeling it could be explained, at the moment there is no explanation so they are UFO's for now. Using time lapse photography or video can change how things are perceived or viewed, this may be the case here. The video was taken on May 1, 2017. Interesting catch. Mufon case #84514 

Sighting Details

I had bought a new time lapse video camera and was letting it run out my back door all night long and down load it the next day. i had watch it a few times with out seeing anything. i then slowed it down as much as i could and noticed the objects almost in a vertical dive then level off and then back up almost vertical when a third object came up from below with them. the rectangular objects had four equally spaced lights. i know what planes and jets look like in the night sky and these were not normal.