AR ) ▁Win ch man ▁( The ▁person ▁who ▁is ▁win ched ▁down ▁from ▁a ▁hel ic opter ▁to ▁rescue ▁people ). ▁Double ▁Gen ▁- ▁ 1 0 0 % ▁De finite ▁fact ual ▁information , ▁usually ▁said ▁with ▁both ▁f ists ▁touch ing ▁tem ples ▁and ▁alongside ▁a ▁pun ishment ; ▁which ▁will ▁be ▁enfor ced ▁if ▁found ▁out ▁to ▁be ▁incorrect . ▁See ▁" Que ens ▁E y eb rows " ▁and ▁" Rob oc op ". ▁DR ▁- ▁Dead ▁reck oning ▁navigation ▁- ▁without ▁land marks . ▁D rem ▁light ing ▁- ▁Early ▁approach ▁landing ▁lights , ▁used ▁at ▁R AF ▁D rem . ▁Dr ink ▁- ▁An ▁ocean , ▁sea , ▁river ▁or ▁lake . ▁Dr one ▁- ▁Un mann ed ▁Aer ial ▁Ve h icle ▁( U AV ) ▁originally ▁military ▁sl ang ▁from ▁the ▁similar ▁sound ▁of ▁a ▁male ▁be e . ▁D uff ▁- ▁Bad ▁or ▁not ▁accurate , ▁as ▁in ▁" du ff ▁gen " ▁( in ac cur ate ▁intelligence ▁or ▁incorrect ▁information ). ▁De ff s ▁- ▁Ear ▁def enders . ▁D ump ie ▁or ▁Dum py ▁- ▁Some one ▁who ▁works ▁in ▁a ▁Bomb ▁D ump ▁or ▁Ex pl os ive ▁Storage ▁Area . ▁Dun lo ps ▁- ▁A ircraft ▁t ires ▁usually ▁on ▁the ▁whe els . ▁Du ppel ▁- ▁German ▁code - name ▁for ▁Window . ▁D ust bin ▁( the ) ▁- ▁Mid ▁g unn ers ▁position . ▁D uv et ▁Fl uffer ▁- ▁Also ▁known ▁as ▁a ▁Supp