The U.S. Air Force is investigating the failure of its classified network, dubbed SIPRNet, at Creech Air Force Base. The network crashed in early September that impacted “critical services” within weeks. Within weeks of the computer disaster, a series of airstrikes went terribly wrong, which resulted in scores of deaths in Syria, Afghanistan, and Somalia. The Air Force would not say whether the failure was due to internal technical faults, a cyber attack, or a state-sponsored hacker.
Source: https://thehackernews.com/2016/10/drone-siprnet-defence-network.html