After a very busy day in Washington and at the White House, given the Saturday flurry of diplomatic activity over the announcement of a tentative Iran peace deal, but which is still awaiting word and some details from Tehran, a deadly shooting erupted just outside the White House, resulting in a massive security and response and presence.President Trump was at the White House when at around 6pm ET the Secret Service responded in a hail of gunfire as 21-year-old Maryland man Nasire Best opened fire at 17th Street and Pennsylvania Avenue NW near the Eisenhower Executive Office Building.via ReutersThe president is safe, and the emergency has been declared over.Somewhere between approximately 15 to 30 gunshots were fired, according to CBS News, which spoke to local law enforcement. President Trump was at the White House during the incident, "but was not impacted," the Secret Service spokesperson later announced.A bystander was wounded, and the suspect was hit by by Secret Service officers upon returning fire. The gunman was wounded and taken to the hospital, where he later died. I was in the middle of taping on my iPhone for a social video from the White House North Lawn when we heard the shots. It sounded like dozens of gunshots. We were told to sprint to the press briefing room where we are holding now. pic.twitter.com/iqdQwh4soq