Under growing pressure from U.S. missile strikes, the al-Qaida terror network is relying more heavily on local insurgent groups along the Pakistan border to house training camps that are growing smaller and more mobile, according to counterterrorism officials and analysts…

Counterterrorism officials and analysts say an exact number of camps along the border is impossible to pin down, but say they are easily in the dozens.

Vahid Brown, a researcher at the Combating Terrorism Center at West Point, said that recent trends suggest al-Qaida is now moving its trainers and resources around, operating within camps operated by a variety of militant groups, including some that have long-standing relationships with Pakistan’s Directorate for Inter-Services Intelligence (ISI) and military intelligence.

That indirect protection offers al-Qaida some degree of security it might not have on its own, he said.