<prompt> Ramba uchienderera mberi ndima ino - Chikamu ichi chakatanga kuve pasi pekutonga kweDare reMusoro, Mauto eU.S., Panama Canal Zone, uye kutanga musi wa1 Chikunguru 1917, mauto euto rezvikepe akaiswa zvakananga kuPanama Canal Dhipatimendi, yaive mukuru wemauto eUnited States muPanama Canal Zone. Mukati meHondo Yenyika I, 7th Aero yakapiwa basa rokuronda U-boats dzeGermany dziri pamhenderekedzo yeCanal Zone  <response>: pasi pokutungamirirwa kweCoast Defenses yeCristobal, kubva pana 1 June 15 November 1918. 