Some more background information.
The RCAF maintained a force of 21 fighter squadrons from 1954 to the end of 1960. The squadrons were Nos. 409, 410, 413, 414, 416, 419, 421, 422, 423, 425, 427, 428, 430, 432, 433, 434, 439, 440, 441, 444 and 445.
At the end of 1960 there were nine squadrons in Air Defence Command (all flying CF-100 Canucks) and twelve squadrons in No. 1 Air Division (four with Canucks and eight with Canadair Sabres).
However, the 21 squadrons were reduced to seven by the end of 1970 as follows:
Four squadrons were disbanded in 1961 - Nos. 413, 428, 432 and 433. They were CF-100 Canuck squadron in Air Defence Command.
Four squadrons were disbanded in 1962 - Nos. 419, 423, 440 and 445. They were CF-100 Canuck squadrons in No. 1 Air Division.
Two squadrons were disbanded in 1964 - Nos. 410 and 414. They were the CF-101 Voodoo squadrons in Air Defence Command.
Two squadrons were disbanded in 1967 - Nos. 434 and 444. These were Starfighter squadrons in No. 1 Air Division.
No. 434 Squadron was reformed on CF-5 Freedom Fighters in 1968 which brought the total up to ten.
Three squadrons were disbanded in 1970 - Nos. 422, 427 and 430. These were Starfighters in No. 1 Air Division, which was renamed No. 1 Canadian Air Group.
The seven surviving squadrons were Nos. 409, 416, 421, 425, 433, 439 and 441. That is:
Nos. 421, 439 and 441 Squadrons with CF-104 Starfighters with Canadian Forces Europe in Germany.
Nos. 409, 416 and 425 Squadrons with CF-101 Voodoos in Air Defence Command.
No. 433 Squadron (renamed 433e Escadrille) with CF5A Freedom Fighters in Mobile Command.
The following second-line fighter units existed between 1960 and 1980:
No. 1 (Fighter) Operational Unit, which disbanded on 1st April 1962 by being renamed the Sabre Conversion Unit.
No. 3 (All-Weather Fighter) Operational Training Unit, which was renamed No. 410 Operational Training Squadron on 1st February 1968.
No. 6 (Strike-Reconnaissance) Operational Training Unit, formed in 1961 and renamed No. 417 Operational Training Squadron on 1st February 1968.
The Golden Hawks aerobatic team, which was disbanded in 1964.
No. 434 Operational Training Squadron was formed on 15th February 1968 to train the CF-5 pilots. It became an operational fighter squadron in 1975.
No. 419 Tactical Fighter Training Squadron formed in 1975 to train the CF-5 pilots.
The upgrading of No. 434 squadron in 1975 increased the number of operational fighter squadrons in the newly formed Air Command from seven to eight. That's why Post 15 says that Air Command had eight first-line and three second-line fighter squadrons in 1980.