Wiper inserts usually are less costly to produce than square-back wiper dies, because multiple wiper inserts can be manufactured from a thick-wall tube, and because the shorter and smaller inserts require less material. In addition, changeover time is shorter with an insert than with a square-back wiper die. However, initial setup requires the purchase of the steel holder, and the inserts must be replaced and disposed of more often than the square-back wiper die.
Of the more than 58,100 Americans who died in Vietnam, 11,465 KIAs were less than 20 years old. The average age of all casualties was 23.11 years old.   According to â¦ the Department of Defense's Combat Casualty File, the average age of an Army infantryman serving in Vietnam was 22. None of the enlisted grades had an average age of less than 20.
It was apparently based on an estimate that 800,000 Vietnam-era veterans had died by 2000. That number was reasonable: About 9.2 million Americans served in the military during the Vietnam era (1964-75), so that would mean about 8 percent of them had died and 92 percent were still alive.