Originally Posted by Local News Station

SEATTLE - The North American Aerospace Defense Command says military fighter jets were scrambled to respond to an air-space violation near Air Force One in Seattle.

Spokesman John Cornelio says the F18 jets were sent from Portland, Ore., as the president was visiting Seattle after a report that an aircraft violated the restricted airspace. He says the aircraft left the restricted area before the Air National Guard jets arrived, and there was no intercept.

KING 5 News was flooded with calls and e-mails from people who heard and felt the explosions. Many people reported that their homes shook.

Emergency agencies across Western Washington have been flooded with calls from people who heard and felt a double boom about 1:50 p.m.

Det. Ed Troyer with the Pierce Co. Sheriff's Dept. says the 911 system is down via landlines in areas of Pierce County due to sonic boom.

Troyer also said many house and car alarms have been set off.

The FAA says the air space closed because of Pres. Barack Obama's visit was breached, and two F18 jets were scrambled in response.