Due to this incident of shooting rampage, security has been tightened at other federal buildings of the US. Even, the Senate officials' premises were shut down in the Capitol while the police searched for another suspect.
It is said that the gunman aimed down on people from a higher floor. Lamenting the mass shooting and killings at the naval base, President Barack Obama promised that whoever carried out this cowardly act would be held responsible.
Washington DC Mayor Vincent Gray has been quoted saying, "we don't have any reason at this stage to suspect terrorism, but certainly it has not been ruled out."
Meanwhile, the police have started seeking information and investigating the recent past behaviour of the shooter and his probable links and contacts.