3645 PTW/3646PTW
3645 PTG - 1 May 52 to 15 Jul 63 (CREW TRNG)
3645 PTW - 15 Jul 63 to 1 Sep 72
3645 PTS - May 62 to 1 Sep 72
Changed to 85 FTS
3646 PTS - May 62 to 1 Sep 72
16 Oc t 1961 - 3645 PTW activated and 1/2 of Laredo's mission is transferred.
15 Feb 1962 - 3645 PTW redesignated 3646 PTW