▁had ▁bre ached ▁their ▁duty ▁of ▁care . ▁ ▁The ▁in quest ▁heard ▁about ▁the ▁incident ▁and ▁the ▁events ▁leading ▁up ▁to ▁it , ▁including ▁how ▁C unning ham ▁had ▁taken ▁Night ▁Nur se ▁( a ▁brand ▁of ▁sleep ing ▁drug ▁in ▁liquid ▁form ) ▁the ▁night ▁before ▁and ▁how ▁moments ▁before ▁cre wing - in , ▁he ▁accepted ▁a ▁ 4 9 - second ▁call ▁on ▁his ▁mobile ▁phone ▁from ▁an ▁estate ▁agent ▁about ▁a ▁house ▁sale . ▁Two ▁medical ▁officers ▁submitted ▁testim ony ▁that ▁disag re ed ▁with ▁each ▁other ▁about ▁the ▁effect ▁of ▁Night ▁Nur se ▁on ▁C unning ham ' s ▁alert ▁state . ▁One ▁stated ▁that ▁Night ▁Nur se ▁contains ▁Prom eth azine , ▁which ▁can ▁cause ▁" d rows iness , ▁poor ▁vision , ▁loss ▁of ▁concentration ▁and ▁cogn itive ▁imp air ment ". ▁The ▁other ▁stated ▁that ▁it ▁was ▁" high ly ▁unlikely " ▁that ▁the ▁do se ▁taken ▁would ▁have ▁had ▁any ▁effect ▁the ▁following ▁day . ▁ ▁Before ▁cre wing - in , ▁C unning ham ▁and ▁some ▁of ▁the ▁other ▁air cre w ▁were ▁waiting ▁for ▁the ▁engineering ▁paper work ▁to ▁be ▁completed ▁and ▁it ▁was ▁stated ▁that ▁C unning ham ▁appeared ▁" in ▁good ▁spirits ", ▁and ▁that ▁he ▁was ▁" bu zz ing ▁with ▁excitement ▁at ▁flying ▁to ▁R AF ▁Valley ▁and ▁an ▁over night ▁stay ▁with ▁four ▁friends ". ▁ ▁The ▁in quest ▁also ▁heard ▁how ▁a ▁squad ron ▁leader ▁who ▁had ▁returned ▁to ▁the ▁Red ▁Ar rows ▁after ▁being