Correction: Military-Hyperfit Women story

In a story July 21 about a U.S. military study of "hyperfit" women, The Associated Press reported erroneously that a vo2 Max score measures how many millimeters of oxygen are used per kilogram of body weight per minute.ARMY SOLDIER SYSTEMS CENTER, Mass. (AP) — In the nearly four years since the Pentagon announced it was opening all combat jobs to women, at least 30 have earned the Army Ranger tab, two have graduated Marine infantry school and three have passed the grueling initial assessme