Captured a ghost at work on camera!

Okay, so after the UFO shit that happened the other night. Tonight at work my co worker Rebecca Dayton and I were just about to get ready to leave when someone or something slammed the back door at our work, So we looked back on the cameras and this is what we saw. If you Look towards the top right of the screen you will see this white orb ball thingy floating around after I walk away. SO SKETCH!!!