<prompt> Passage: On 20 Septhemba 1939, ngaphambi YP-38s yayakhiwe futhi avivinye flight, USAAF wayala 66 ukukhiqizwa kokuqala P-38 Lightnings, 30 okuyinto zahanjiswa USAAF maphakathi no-1941, kodwa akuzona zonke lezi izindiza babehlomile. izindiza Unarmed kamuva ifakwe ezine.50 in 12.7 mm izibhamu esikhundleni ezimbili.50 in12.7 mm futhi ezimbili.30 in7.62 mm of ababengaphambi kwabo kanye 37 mm 1.46 in isibhamu. Babenakho ingilazi armored, abanikeze asebenza nabo cockpit armor futhi izilawuli fluorescent. Omunye igcwaliswe nge cabin ingcindezi ephelele ngesisekelo zokuhlola futhi esiqokiwe XP-38A. Ngenxa imibiko USAAF kwaba ethola kusukela eYurophu, abasele in the batch main 36 bathuthukiswa nge amancane ezifana fuel self-sealing amathangi kanye nama-wheel wings, kodwa hhayi zonke lezi izindiza babehlomile.  <response>: I-XP-38A 