il ot , ▁N avigator , ▁Air ▁Electron ics ▁Oper ator , ▁Radio ▁Oper ator , ▁Air ▁Sign aller , ▁We ap on ▁Systems ▁Oper ator , ▁A eros pace ▁Systems ▁Oper ator , ▁Air ▁Load master , ▁and ▁Air ▁Gun ner . ▁O gg ie ▁- ▁A ux ili ary ▁air men / w omen ▁( s ometimes ▁called ▁week end ▁war riors ). ▁O gg in ▁- ▁Any ▁sea ▁or ▁large ▁lake . ▁Old ▁Fol ks ▁Home ▁- ▁The ▁Serge ants ▁mess . ▁Old ▁Man ▁- ▁The ▁Squadron ▁Command ing ▁Officer . ▁On ▁the ▁Be am ▁- ▁In ▁line ▁with ▁the ▁Inst rument ▁Land ing ▁System . ▁O ppo ▁- ▁Mate ▁or ▁Col le ague . ▁Or anges ▁- ▁Vit amin ▁C ▁table ts . ▁O ps ▁- ▁Oper ations . ▁O psum ▁- ▁Oper ational ▁summary ▁by ▁intelligence ▁officer . ▁Order ly ▁- ▁Perform ing ▁admin ▁responsibility ▁on ▁that ▁day ▁which ▁is ▁different ▁from ▁normal ▁duties ▁e . g . ▁" B illet ▁Order ly " ▁or ▁" Order ly ▁Officer ". ▁ ▁P ▁▁ ▁Pack et , ▁to ▁catch ▁a ▁- ▁To ▁be ▁on ▁the ▁receiving ▁end ▁of ▁off ensive ▁fire . ▁Pan ▁( the ) ▁- ▁A ircraft ▁par king ▁and ▁serv icing ▁area . ▁Pan ca ke ▁- ▁Hard ▁landing , ▁with ▁or ▁without ▁under car riage . ▁Pass ing ▁Out ▁- ▁Comple tion ▁of ▁a ▁special ▁training ▁course ▁leading ▁to ▁a ▁higher ▁rank . ▁Pass ing ▁Out ▁Par ade ▁- ▁A ▁special ▁cer emon ial ▁para