FAB-500
FAB-500 is an aerial bomb or 500 kg bomb.
Also recorded as FAB-500T; FAB500.
Overview
Russian Air Force low-drag, general purpose, air-dropped bomb.
In detail
It is associated with Soviet Union.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“FAB-500”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q9257292: FAB-500
Consult the source