op ▁strength ▁levels ▁ ▁Sec . ▁ 9 ▁– ▁Emer gency ▁Author ity ▁for ▁Air ships ▁and ▁Aer ial ▁Mach ines ▁Build ings ▁and ▁motor ▁vehicles ▁A viation ▁stations ▁S ites ▁and ▁buildings ▁Use ▁of ▁public ▁lands ▁Im prov ements ▁of ▁sites ▁Build ings ▁and ▁structures ▁Water , ▁lights , ▁and ▁pl umb ing ▁Ro ads ▁and ▁wh ar ves ▁Sub s istence ▁equip ments ▁F uel ▁supplies ▁Const ruction ▁mach in ery ▁and ▁tools ▁Special ▁cl othing ▁Dom estic ▁and ▁abroad ▁travel ▁exp enses ▁V oc ational ▁training ▁Comp ens ation ▁for ▁reserve ▁officers ▁and ▁en list ed ▁personnel ▁called ▁into ▁service ▁Pay ▁accounts ▁Development ▁of ▁air plan es ▁and ▁engines ▁ ▁Man ufact uring ▁plants ▁maintenance ▁School s ▁for ▁av iation ▁technical ▁instructions ▁New ▁equipment ▁ex changes ▁Foreign ▁instruct ors ▁travel ▁compens ation ▁within ▁the ▁United ▁States ▁▁ ▁Sec . ▁ 1 0 ▁– ▁App ropri ation ▁ ▁Associ ated ▁United ▁States ▁Federal ▁Stat utes ▁United ▁States ▁legisl ation ▁for ▁the ▁govern ance , ▁service , ▁and ▁training ▁of ▁air ships ▁designed ▁and ▁developed ▁for ▁military ▁operations . ▁ ▁See ▁also ▁ ▁Historic ▁Air ship ▁H ang ars ▁in ▁United ▁States ▁ ▁Historical ▁Video ▁Archives ▁ ▁External ▁links ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ ▁▁▁▁▁▁▁▁▁ ▁Category : 1 9 1 7 ▁in ▁law ▁Category : 1 9 1 7 ▁in ▁American ▁law ▁Category : 1 9 1 7 ▁in ▁the ▁United ▁States ▁Category : 6 5 th ▁United ▁States ▁Congress ▁Category : History ▁of ▁the ▁United ▁States ▁( 1 8 6 5 – 1 9 1