From a recent investigation carried out by the Washington Post:
"Last fall, after eight years of growth and hirings, the enterprise was at full throttle when word emerged that something was seriously amiss inside Yemen. In response, President Obama signed an order sending dozens of secret commandos to that country to target and kill the leaders of an al-Qaeda affiliate.
In Yemen, the commandos set up a joint operations center packed with hard drives, forensic kits and communications gear. They exchanged thousands of intercepts, agent reports, photographic evidence and real-time video surveillance with dozens of top-secret organizations in the United States."