A TRACON Controller reported they vectored an aircraft below the Minimum Vectoring Altitude.

Narrative

I was working Radar East and was CIC (Controller in Charge). There was training in progress occurring on Arrival Data at the time. The session was busy with multiple aircraft performing survey work north of ZZZ and multiple pipeline aircraft working in and around the TRSA and Deltas. Multiple Military aircraft showed up for practice approaches as well. Aircraft X came over to me from ZZZ Approach traveling along the coast VFR and then eventually inbound to ZZZ1 for some low approaches . Upon completion of those low approaches Aircraft X requested a local IFR for practice approaches at ZZZ. I cleared Aircraft X for the local IFR and started vectoring him for his first approach at ZZZ (an ILS XX I believe) and in sequence with some TEX2s; BE20s; and another T38. Aircraft X was vectored and cleared on the first approach with no issues and I gave him missed approach instructions of 050 and 2000' on the go. Upon completion of the missed approach I started vectoring Aircraft X in sequence with a couple of other aircraft and went straight into the 2500' MVA around an antenna at 2000'. I was not paying enough attention to each aircraft I was working and lost track of Aircraft X altitude. The Low Altitude Alert (LAA) went off as Aircraft X was passing over the antenna and I froze. By the time I focused back on the whole picture Aircraft X was past the antenna and I continued to vector Aircraft X and the other aircraft in sequence and to completion of their approaches.Recurrent Training on Low Altitude Alerts and other Alerts.