U.S. Government UFO Magazine Article/
UFO News Magazine Article: 

“F-94s Called Out to Chase ‘Saucers’ Over Washington”,

2 August 1952 
(Air Force Times, Springfield (current HQ), Virginia)/

“Blips on the Scopes”, 4 August 1952

(TIME Magazine, New York City)

(unexplained-mysteries.com)

The articles report on the July 1952 Washington, D.C. UFO flyover incidents:

http://www.unexplained-mysteries.com/forum/index.php?showtopic=107849&st=15

The Washington Post headline, 28 July 1952:
“ ‘Saucer’ Outran Jet, Pilot Reveals”