DHS says homegrown terror threat most serious since 91. Homegrown terrorists currently pose one of the most serious threats to the US since the September 1. The Department of Homeland Security issued an updated bulletin through the National Terrorism Advisory System late on Monday night. We face one of the most serious terror threat environments since the 91. Sep/img_99663_coverstory_byjufinal.jpg' alt='Watch Homegrown Online Forbes' title='Watch Homegrown Online Forbes' />Internet to inspire, enable, or direct individuals already here in the homeland to commit terrorist acts, it states. Terrorist groups are urging recruits to adopt easy to use tools to target public places and events. The Department of Homeland Security has warned homegrown terrorists currently pose one of the most serious threats to the US since the September 1. Pictured is a DHS officer in Los Angeles on April 1. We are in a generational fight against terrorist groups and those they inspire, Homeland Security Secretary John Kelly said in a statementSpecific attack tactics have included the use of vehicle ramming, small arms, straight edged blades or knives, and homemade explosives, as well as other acts such as taking hostages. Additionally, foreign terrorist fighters, who have acquired training and battle tested terrorism experience, are likely to flee from terrorist controlled territories with a desire to conduct attacks elsewhere, including the United States. Secretary of Homeland Security John F. Kelly released a statement announcing the increased level on Monday. Watch Dog Soldiers Online Facebook. We are in a generational fight against terrorist groups and those they inspire, and for us to protect our homeland we will need constant vigilance and clear focus on staying a step ahead of the enemy, it read. After careful consideration of the current threat environment and input from intelligence and law enforcement partners, I have made the decision to update and extend for six months the NTAS Bulletin based on the persistent threat from homegrown terrorists. We face one of the most serious terror threat environments since the 91. I spend 340 nights a year in hotels searching for the latest and greatest in the travel industry. Watch Our Man In Havana Dailymotion here. My writing and photographs have appeared in print, online. Orlando, Florida CNNWhile the bodies of Omar Mateens victims were removed from Pulse nightclub overnight, investigators worked Monday to determine what. Watch Homegrown Online Forbes' title='Watch Homegrown Online Forbes' />DHS bulletin warned on Monday. Department of Homeland Security are pictured outside a US District Court in Washington state on February 1.