FBI Warns US Citizens: Be On Alert
The FBI asked law enforcement agencies across the United States on Sunday to operate at the highest possible state of alert for "any act of terrorism or violence" domestically following the beginning of military strikes inside Afghanistan.
Security at airports and ports and around Washington DC and at other locations went on high alert.
"Coinciding with today's military action, the FBI through the National Threat Warning System has again requested all law enforcement to be at the highest level of vigilance and be prepared to respond to any act of terrorism or violence should it become necessary," the FBI said in a statement.
"Further, all law enforcement agencies have been asked to evaluate whether additional local security measures are warranted in light of the military operations and the current threat level," the agency added.