I was checking FlightRadar24 earlier and noticed not one, not two, not three, but up to TEN helicopters hovering over and around the airport and the western/southwestern end of the county. They included at least two Army helicopters, at least one privately registered helicopter, a Coast Guard helicopter (which was hovering and making a small, tight orbit over a spot on the Brazos River), Travis County STAR, two DPS units, a Texas Parks & Wildlife unit from San Marcos, and one from the San Antonio Police Department. I'm not hearing anything significant on the scanner. I don't know if anyone has an explanation for this, but it is so unusual I just thought I would mention it.