Original sentence: In April 2009, reports surfaced that China and Russia had infiltrated the U.Massive power outages caused by a cyber attack, could disrupt the economy, distract from a simultaneous military attack, or create a national trauma.One counter measure would be to disconnect the power grid from the Internet to decrease the likelihood of attack.The United States Department of Homeland Security works with industry to identify vulnerabilities and to help industry enhance the security of control system networks, the federal government is also working to ensure that security is built in as the next generation of "smart grid" networks are developed.The federal government of the United States admits that the electric power transmission is susceptible to cyber-warfare.electrical grid and left behind software programs that could be used to disrupt the system, according to current and former national security officials
Edited sentence: Massive power outages caused by a cyber attack, would cause a crisis making it difficult for the government and emergency workers to respond to critical concerns  leading to national trauma.On April 8, 2009, it is believed that China or Russia have infiltrated the U.One counter measure the U.The Federal government of the United States admits that the electric power transmission is susceptible to cyber-warfare.The United States Department of Homeland Security works with industry to identify vulnerabilities and to help industry enhance the security of control system networks, the federal government is also working to ensure that security is built in as we develop the next generation of 'smart grid' networks.electrical grid and left behind software programs that could be used to disrupt the system, according to current and former national-security officials.should consider is disconnecting the power grid from the Internet to decrease the likelihood of attack