Someone else fill in the details please?
RAF Hunter Squadron, somewhere (Germany?), time ?1960'/70's?
T'other Squadron, Hunter up on jacks in the hangar facing said Squadron, (ie weight off wheels!), A/C Plonk (accidentally?) fires a few rounds of 30mm Aden cannon hardware which pass through first Squadron's buildings. Boss of first Squadron sends signal to Boss of second saying, "If you do not cease immediately, we will fire back"
Priceless!