It's not. I was based there for over 15 years.
The PAR showed up somewhere in the late 2000s, maybe early 2010s. I think it was part of the BRAC realignment when NAS Willow Grove shut down and the Navy C-130s were sent to McGuire (now Joint Base-McGuire/Dix/Lakehurst/JB-MDL). At the time the controllers were getting all spun up so they were always asking for radar approaches.
As an aside, what was funny was that it made more work for us ANG pilots. On our AF checkrides, we have to do a mixture of approaches, precision & non-precision, all-engine & engine out, normal-flap & partial flap, circling, etc. One of the things that the Instruction stipulated was that a radar approach HAD to be demonstrated. But Air Force bases had pretty much gotten rid of all their PARs decades ago, so there was an out written into the Instruction that if a radar approach couldn't be accomplished, the checkride was allowed to be completed, but then the radar approach procedures had to be verbally evaluated during the debrief (how often should you hear the controller talk to you on final? (5 seconds for PAR, 15 seconds on an ASR), yada, yada, yada...). So, that's what we always expected, "PAR not available, procedures were verbally evaluated." Well, along comes the PAR installation at WRI, and I remember giving one of the first checkrides after it was certified, and during the briefing, the evaluatee briefed the approaches he was planning... an ILS, then a localizer and another ILS, etc. At the end of the briefing I asked "where are you going to do the PAR?" He looked at me, shocked "you guys are serious about that?" Lol. Yeah, we are... it went off without a hitch, especially because a smart pilot will follow the Instructions and back up every radar approach with a ground based approach. So a PAR backed up with an ILS, is de rigueur. It's amazing how well a PAR can be flown when you have ILS data staring you in the face.