ARCHIE, Mo. (AP) - Two drivers were killed in the head-on collision of their cars early Wednesday on U.S. 71 a mile and a half south of Archie in Cass County.Dead are 19-year-old Gary McMillin of Adrian, Mo., and 28-year-old Leo Fike of Waterloo, Iowa.Injured were Fike’s wife, Mrs. Patricia Ann Fike, 26, and another passenger in the Fike car.Sue Ann Everett, 13, also of Waterloo.Mrs. Fike was reported in critical condition at the Cass County Memorial Hospital in Harrisonville, with fractures of the skull, pelvis and left hip, and internal injuries.