Perhaps the start of Shock & Awe.
My guess is UKR has been gathering target intel for several weeks or months using Leleka-100 drones.
From Feb 11, 2023: Leleka-100 is a fully autonomous unmanned aerial system (UAS) developed by DEVIRO, an unmanned aircraft systems manufacturer based in Ukraine.
The Leleka-100 can carry electro-optical, thermal/daylight and high-resolution imaging payloads including a PLCI Z30 daylight module with changeable 20x optical zoom, and a PLCI IR night vision module with fixed 4x optical zoom.
Whatever the plan is for Ukraine’s Spring counteroffensive, it must include preparation with fires.
NATO planners must have been poring over the target lists, in endless meetings and approval processes.
I expect a significant ass whipping for the Russian forces. I hope they exceed my expectations.