Musi waApril 5, 1965, U.S. kuongorora akawana kuti North Vietnamese vakanga kuvaka nzvimbo nokuti chii chete aigona kuva pasi-kuti-mhepo chombo (SAM) mabhatiri. The mhepo simba uye navy ipapo wakanyoresa pamwe chikumbiro Washington kuti mvumo kurova nzvimbo, asi ivo vakaramba sezvo nzvimbo dzakawanda vaiva pedyo dzakarambidzwa dzomumaguta nzvimbo. Zvadaro, musi waJuly 24, mumwe F-4 akapfurwa pasi ne SA-2 Guideline chombo. Mazuva matatu gare gare, imwe-nguva kurova akanga mvumo pamusoro vaviri kure missile nzvimbo. The vokuAmerica, zvisinei, akawira kuti imwe yakaoma musungo apo nzvimbo vakabuda kuva dummies akapoteredzwa Anti-ndege artillery kuzvidzivirira.
SA-2 Guideline missile