Estimates for Hezbollah's total number of drones range from more than 10 to "dozens" to almost 200, not counting commercial civilian drones. In 2006, the group claimed to have 50 trained drone pilots. Hezbollah drones of disputed model, known as the Mirsad-1 and either an Abadil-2 or Mohajer-4 model, violated Israeli airspace in November 2004 and April 2005. Hezbollah operates Abidil-2 UAVs in several models, including communications, the Qasef-1 loitering munition, and strategic intelligence. The group does not have Abadil-2 drones for tactical surveillance. In 2014 or 2015 Hezbollah built a 2200-foot unpaved runway in the northern Bekaa Valley, probably to use for UAVs in Syria. There is speculation that Hezbollah has acquired the Shahed 129 UAV.