This is probably what Q is referring to when he wrote in his drops about a pickle, I tried to find out if there is a meaning to this in the military code, and here is what I offered:

from Wikipedia: to Pickle. Slang reference by

pilots to the release of ordnance (bombs and canisters) over a target, one at a time in close sequence, on one pass

https://en.m.wikipedia.org/wiki/Wikipedia:Reference_desk/Archives/Language/2019_November_28