Passenger made threatening remarksTwo fighter jets intercepted a Hawaii-bound airliner after a passenger refused to hand over his carry-on bag and passed a "disturbing note," officials said.
http://www.upi.com/Top_News/US/2010/01/06/F-15s-escort-US-flight-after-disturbance/UPI-84401262825695/Note: Call signs Rock 1 and Rock 2 are USAFE Air defense fighters from 142nd Fighter Wing.

Oregon Air Defense Fighter Wing, National Guard
http://www.142fw.ang.af.mil/resources/"The Oregon National Guard's 142nd Fighter Wing, assigned the Air Sovereignty Alert Mission, guards the Pacific Northwest skies from northern California to the Canadian border, on 24-hour alert as part of the North American Air Defense system.
The F-15 fighter jets become a federal asset once alerted, placing them under presidential authority.
The Oregon Air National Guard has been an integral part of the nation's air defense since 1941, and is comprised of approximately 2,200 citizen airmen with bases in both Portland and Klamath Falls."
http://kohd.com/page/157949File length - 5:34 min.
KPDX Approach & Tower