N'ọgwụgwụ ọnwa Eprel afọ 1914, n'okpuru ntuziaka Lieutenant Allen B. Reed, "Iris" tinyere ụgbọ mmiri torpedo ise sitere na Pacific Fleet Torpedo Flotilla, nyere iwu ka ha banye na Ọwara Oké Osimiri California, nke a makwaara dị ka Oké Osimiri Cortez na-esote Tampico Affair. Ha nọ na-agagharị na gburugburu La Paz na Mazatlan, Mexico, n'oge ọgba aghara obodo ahụ na-aga n'ihu
e nwere. N'ọnwa Mee na Juun nke afọ 1914, "Iris" kpọpụrụ ụmụ amaala America gbara ọsọ ndụ na Mazatlan na Acapulco, gụnyere onye nnọchi anya ndị America, Hon. Clement S. Edwards. N'abalị iri na itoolu n'ọnwa Juun, "Iris" hapụrụ Mazatlan gawa La Paz, Mexico. "Iris" hapụrụ La Paz gaa San Diego na 28 Ọgọstụ. Mgbe ọ laghachiri San Diego, "Iris" nọrọ ọnwa ole na ole na-esote na ọrụ patrol mgbe niile na ụgbọ mmiri torpedo na squadron ya, na-arụ ọrụ n'ụsọ oké osimiri California n'etiti San Pedro na San Diego.