(note: the reporter CJ Chivers is a former infantry officer)
Libyan Rebels Take Risks With Makeshift Arms - NYTimes.com
.... the men who fire them have little idea of how far these rockets fly, a limited ability to change their elevation, and, (depending on the makeshift mount), often have no ability to traverse them left or right. Often times, those who fire them fire them this way: They point the front grill of their truck in the rough direction of the intended target, and commence launching a barrage. The result is obvious even before the first rockets whooshes into the air. Those involved can make their high-explosive rockets go up. They have only the faintest sense of where the rockets will come down.
.... No one can reasonably dispute that this is indiscriminate fire, and there is already a small undercurrent of anger among the rebels at some of those who fire them. The rockets have often landed near other rebels .... some credible accounts, it was an errant barrage of 57-millimeter rockets from another pod like this one that killed Dr. Salah al-Awami last week.