Gray Spherical Object Hovers Over Jet in San Antonio

• When: May 4th, 2017 at 4 PM
  
• Where: Northwest San Antonio
• What: Dark gray metallic object speeds and hovers near jet

TexasUFOs reader Robin first noticed a jet flying overhead in the daytime sky before she then spotted a spherical gray object trailing the jet and even hovering at one point. The sighting occurred near the San Antonio Medical Center:

Gray w black eye. . . Perfect sphere.

Looked up at a jet flying over and noticed a gray sphere, perfectly round with a big black "eye" gaining on the jet, then hovered over it a brief moment before zipping away passing it up. . . Pulled out my phone and caught this!

What could this UFO be? The object seems too fast and quick to be a drone, which would also be flirting with disaster trailing a jet anyways. But perhaps that is the explanation.  Share your theories in the comments below, or if you saw this UFO yourself, share your encounter.