The Russian probably unloaded from the trains as it arrived from Russia and stacked it up waiting for the trucks that never came back to pick it up or were traffic jammed on the roads. There was probably a mountain of shit improperly stored close together for security reasons. When one goes up for whatever reason, so does the rest and likely anybody who was close enough to hear the drone at night was probably killed in the blasts and there wouldn't be much left of the drone either if it landed on the right thing. In such circumstances a small RC plane flying a way point mission and carrying a half a pound of plastic explosive could do the same thing, a half a dozen of them would make sure it blew up!
This is what RC plane hobbyist play with these days and why I think that it can make a difference, here you have the brain of a drone, or a cruise missle, it cost about $120. with a good quality GPS module. Look at the specs, it comes with a variety of radio receivers and can use custom ones too and even be hooked up to a starlink satellite connection I imagine. Pipe the video from you camera into it and output to the video transmitter and you've got a HUD, called and OSD that can give you a ton of info from the drone, or it can fly autonomously to the target. This is off the shelf stuff that can be ordered from Amazon or Bangood.
A flight control computer, quads use a different version, this is for RC planes.
FrSKY R9 / RXSR Pilot F765 FC with stacked R9 or RXSR ACCESS receiver,
The FrSky Pilot series flight controller is an All-in-One module that supports comprehensive flight control functions with pre-installed powerful INAV...
www.frsky-rc.com
...
SPECS:
Supports FrSky F.Port 2.0 Protocol
12 Servo/Motor Outputs & Multiple Serial Ports (6 UARTs, I²C, SPI)
Powerful STM32F765 Based Flight Controller is capable Running on INAV / Ardupilot / Betaflight Firmware
Built-in Graphic FrSky OSD
Supports FrSky S.Port Sensors
Built-in Multiple Sensors
Max 150A Capable Hall-effect Current Sensor
Built-in 3-axis Gyroscope & 3-axis Accelerometer Sensor (ICM20602IMU, ±2000dps, ±16g)
Supports ICM20601/ICM20602/MPU6000 IMU as external gyroscope module with vibration insulated box
Built-in Barometer sensor(SPL06-001)
Adjustable Voltage Output through integrated BEC function
Supports Black Box Data Record Function(via SD card)
Compatible Receiver
Standard FPC Interface on-board receiver with a perfect fit protection box (RXSR-FC/R9MM-FC-OTA, etc.)
All F.Port 2.0 Capable Receivers (Archer and Tandem Series Receivers, etc.)
SBUS Receivers and Some Others with Serial Ports
