Two orange light, seen heading toward the river flying low. then vanishing.

I was standing out back looking over harrisburg city, I noticed to orange lights hovering around downtown Harrisburg.  
They looked rather different, from the planes I am use to seeing.  One looked like it flew directly into the river, a few minutes later the other one followed.  
They were just solid orange light's, Nothen blinked or changed through the duration of the sighting.
Witness elects to remain totally anonymous; provides no contact information.  PD