After weeks of skirmishes in the Nafusa Mountains southwest of Tripoli, Sifaw Twawa and his brigade of freedom fighters are at a standstill. It's a mid-April night in 2011, and Twawa's men are frightened. Lightly armed and hidden only by trees, they are a stone's throw from one of four Grad 122-millimeter multiple-rocket launchers laying down a barrage on Yefren, their besieged hometown. These weapons can fire up to 40 unguided rockets in 20 seconds. Each round carries a high-­explosive fragmentation warhead weighing 40 pounds. They urgently need to know how to deal with this, or they will have to pull back. Twawa's cell phone rings.

Two friends are on the line, via a Skype conference call. Nureddin Ashammakhi is in Finland, where he heads a research team developing biomaterials technology, and Khalid Hatashe, a medical doctor, is in the United Kingdom. The Qaddafi regime trained Hatashe on Grads during his compulsory military service. He explains that Twawa's katiba—brigade—is well short of the Grad's minimum range: at this distance, any rockets fired would shoot past them. Hatashe adds that the launcher can be triggered from several hundred feet away using an electric cable, so the enemy may not be in or near the launch vehicle. Twawa's men successfully attack the Grad—all because two civilians briefed their leader, over Skype, in a battlefield a continent away.