<prompt> Pedzisa mutsara unotevera: Chikamu chekutanga chakauya 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 mukuru weUnited States Army muCanal Zone. Mukati meHondo yeNyika I, 7th Aero yakapiwa basa rokuronda U-boats dzeGermany dziri pamhenderekedzo yegungwa re  <response>: Canal Zone pasi pekutungamirirwa kweCoast Defenses yeCristobal, kubva muna 1 Chikumi 15 Mbudzi 1918. 