UFO SIGHTINGS INCREASED WITH ANP GOALS

1952
A modified direct nuclear powered Canberra was responsible for the 1501 UFO sightings. 

1957

The indirect nuclear powered U2 is responsible for 1006 UFO sightings. 

1966

The nuclear powered ramjet engined SR-71 is responsible for 1112 UFO sightings. 

NOTES:

The U-2 made its first flight in August 1955, with famed Lockheed test pilot Tony LeVier, at the controls, and began operational service in 1956.

Members of a unit innocuously designated 2nd Weather Reconnaissance Squadron (Provisional), began to arrive at Adana Air Base in Turkey in August 1956.

https://fas.org/irp/program/collect/u-2.htm#:~:text=The%20U%2D2%20made%20its,in%20Turkey%20in%20August%201956.

The SR-71’s first flight took place on Dec. 22, 1964, and the first operational aircraft entered service with the 4200th Strategic Reconnaissance Wing at Beale Air Force Base, California, in January 1966.

A total of 32 aircraft were built.

https://airman.dodlive.mil/2017/07/10/airframe-the-sr-71-blackbird/#:~:text=The%20SR%2D71's%20first%20flight,of%2032%20aircraft%20were%20built.