In January 1945 - Pasco Nas, Washington, USA -   An object was tracked by radar. An unidentified object was tracked by radar (Hendershott).

4 July 1947 09:12 - Emmett, Idaho, USA -   Five disc-shaped objects with flat bottoms and rough tops.

9 July 1947 12:17 - Boise, Idaho, USA -   Air Guard At-6 incident. Black disc, standing out against the clouds, made a half-roll and then a stair-step climb. Explanation: Balloon.

30 December 1947 - Sawtooth National Forest, Idaho, USA -   A high speed object trailing green and blue flames

22 May 1949 13:30 - Hanford Nuclear Facility, Washington, USA -   USAF F-82 Pilot incident. Explanation: Aircraft.

30 July 1950 - Hanford Aec, Washington, USA -   Radar-visual confirmation. USAF jets srambled to chase disc seen over AEC plant.

In 1951 - Great Falls, Montana, USA -   An object was tracked by radar and sighted visually. An unidentified object was tracked by radar and sighted visually.

1 August 1952 05:00 - Yaak, Montana, USA -   ADC incident. Radar / visual sighting

1 September 1952 04:45 - Yaak, Montana, USA -   Two small, varicolored lights became black silhouettes

10 December 1952 19:15 - Odessa, Washington, USA -   Two pilots in an F-94 made visual and radar contact with a large, round, white object. The object hovered, reversed direction almost instantaneously and disappeared. Official explanation: Balloon.

6 February 1953 01:37 - Rosalia, Washington, USA -   Blinking white light turn and disappear. Explanation: Balloon.

27 February 1953 03:16 - Great Falls Afb, Montana, USA -   Radar

In Mid- 1953 - Yaak, Montana, USA -   Six targets in formation changed direction 5 times in one min, changed formation; 90 degree turns; 1400-1600 mph

2 March 1956 16:40 - Spokane, Washington, USA -   An object was tracked by radar and sighted visually. One object was observed by military witnesses for over 30 seconds (Stoner). Explanation: Aircraft.

10 April 1957 20:30 - Ogden, Utah, USA -   An object was tracked by radar and sighted visually. One object was observed for over ten minutes (Baker). Explanation: Balloon.

In mid-May 1958 Around 2200 - Malmstrom AFB, Montana, USA -   An object was tracked by radar and sighted visually. One object was observed by military witnesses near a nuclear test site.

4 August 1958 22:45 - Malmstrom AFB, Montana, USA -   An object was tracked by radar and sighted visually. One object was observed by military witnesses at an airfield for 30 seconds. Explanation: Aircraft.

25 March 1959 19:41 - N, Montana, USA -   Northern Montana. Explanation: Aircraft.

12 February 1962 - Winnemucca Afb, Nevada, USA -   An object was tracked by radar. An unidentified object was tracked by radar only by military witnesses at an airfield.

4 December 1964 - Baker, Oregon, USA -   An unidentified but otherwise conventional object was sighted. An unidentified object was tracked by radar only. Explanation: Star.

In mid-May 1965 Pre-dawn - Malmstrom AFB, Montana, USA -   An object was tracked by radar and sighted visually. An unidentified object was tracked by radar and sighted visually at an airfield (McElrea).

31 August 1965 - Winnemucca Afs, Nevada, USA -   An object was tracked by radar. An unidentified object was tracked by radar at an airfield. Explanation: Weather.

23 February 1967 21:05 - Glasgow AFB, Montana, USA -  

12 August 1972 - Fairchild AFB, Washington, USA -   An object was tracked by radar. An unidentified object was tracked by radar at an airfield.

7 November 1975 02:53 - Malmstrom AFB, Montana, USA -   NORAD incident.

8 November 1975 01:20 - Malmstrom Afb, L Sites, Montana, USA -   SAC incident.

8 November 1975 02:10 - Stanford Se10M Site C1, Montana, USA -   SAC incident.

In December 1975 - Fairfield, Montana, USA -   An object was tracked by radar and sighted visually. An unidentified object was tracked by radar and sighted visually.