550 government employees and industry observers participated in a simulated cyberattack on American soil.
The federal government deployed twice as many cyber professionals this year as in 2013 during a -- simulated -- foreign-based cyberattack on U.S. soil, Pentagon officials said Thursday.
About 550 participants recently completed "Cyber Guard 14-1," a two-week exercise executed by the U.S. Cyber Command and hosted at the FBI's National Academy in Quantico, Virginia.
The annual rehearsal, first run in 2011, tests governmentwide cooperation as well as tactical-level operations, according to the Defense Department.
This year, the National Guard, Reserves, National Security Agency and CYBERCOM practiced supporting civilian agency responses to attacks on model "critical infrastructure" networks.
At times, the departments of Homeland Security, Justice and Defense have clashed over who has authority to thwart hacks on critical infrastructure -- key private sector operations such as power generation and banking.
"In the event of a domestic cyber incident, federal agencies have specific, complementary roles," Defense officials said in a statement Thursday.
DHS leads the coordination of protection, prevention and recovery from a cyber incident, officials stated.
Justice is in charge of "the investigation, attribution, disruption and prosecution of domestic cybercrimes," as well as circulating domestic cyber threat intelligence, they added. "DOD is responsible for defending the nation from attack, collecting, analyzing and distributing foreign threat intelligence, and supporting DHS in their protection, prevention and recovery role."
CYBERCOM oversees Defensewide efforts to protect military networks, infiltrate adversary networks and obstruct hacks targeting domestic critical infrastructure.
CYBERCOM Commander Michael Rogers has set a goal of training and certifying 6,000 DOD cyber pros by the end of 2016.
In remarks to private sector visitors observing the exercise, he said: "We are continuing to learn and mature. We have to build a construct to work seamlessly and effectively with our partners, and not just within the government, but also with industry and academia outside [Defense]."
A majority of the participants were National Guard service members, who represented more than 20 states.
One CYBERCOM mission force team partnered with the Coast Guard, a DHS agency, to protect military information networks, “building on our great relationship with DHS,” Phil La Perla, chief of readiness and exercises for the Defense Information Systems Agency, said in a statement.
Coast Guard Rear Adm. Kevin Lunday, CYBERCOM's director of training, added, "We have gone from just a few Guard teams two years ago to incorporating critical government and private sector partnerships to test whole-of-nation solutions in this dynamic domain."