6/14 Update: Three UFOs were spotted hovering in nearby Alton around the same time.
A video featuring a bright light hovering in the air and then slowly descending has hit YouTube... not sure what the UFO did when the witness stopped recording, but a friend of the witnessed commented:
I can verify that this video is from a trusted source whom I've known for several years and is a law enforcement officer in McAllen, Texas. This is one of the most intriguing videos we've seen lately and will continue to analyze. Thanks for posting, Jesus.