I always thought that these drones could be used in different capacities.
1. Fly along our coasts with radiation detection devices.
2. Spray flourescent dyes along the border and trace footprints, tire prints. Guide ICE officials to the prints.
3. Same thing along the Iranian and Syrian borders but instead of ICE, fire missiles at the prints.
4. Make them stealthy and give them to the Israelis, Taiwanese, Brazilian and Polish militaries as Christmas presents. Mount sparrows on them as a bonus gift.
Don’t even need dyes, just put an IR camera on them. Easy to detect body heat on a cool night.