Malfunctioning drone test - loss of control, so escort fighter shot it down.
If so - no excuses.
That’s a copy of the Lockheed RQ-170 drone that Obama gave to the Iranians
They have had 12 years to reverse engineer and get things right
Iran has been flying them for the last several years and it’s a pretty effective knock off
Makes a pretty effective stealth cruise missile too and it can carry tactical nukes