The killers were robots

Death at a Distance: The U.S. Air War

Conn Hallinan August 30, 2007
Editor: Miriam Pemberton
Foreign Policy In Focus
http://www.fpif.org/
According to the residents of Datta Khel, a town in Pakistan's North Waziristan, three missiles streaked out of Afghanistan's Pakitka Province and slammed into a Madrassa, or Islamic school, this past June. When the smoke cleared, the Asia Times reported, 30 people were dead.
The killers were robots, General Atomics MQ-1 Predators. The AGM-114 Hellfire missiles they used in the attack were directed from a base deep in the southern Nevada desert.

It was not the first time Predators had struck. The previous year a CIA Predator took a shot at al-Qaeda's number two man, Ayman al-Zawahiri, but missed. The missile, however, killed 18 people. According to the Asia Times piece, at least one other suspected al-Qaeda member was assassinated by a Predator in Pakistan's northern frontier area, and in 2002 a Predator killed six "suspected al-Qaeda" members in Yemen.
These assaults are part of what may be the best kept secret of the Iraq-Afghanistan conflicts: an enormous intensification of US bombardments in these and other countries in the region, the increasing number of civilian casualties such a strategy entails, and the growing role of pilot-less killers in the conflict.
According to Associated Press, there has been a five-fold increase in the number of bombs dropped on Iraq during the first six months of 2007 over the same period in 2006. More than 30 tons of those have been cluster weapons, which take an especially heavy toll on civilians.