Your old pension is sitting there — doing less than it should.
Most firefighters I talk to have at least one of these: a 457(b) from a prior department, an old 401(k) from a side job, a pension from a job they didn't stay at long enough. The account stays put. Nobody rebalances it. Fees keep quietly eating it. And when the market takes a hit the year before retirement, it eats that too.
A rollover doesn't fix laziness. It fixes being stuck with someone else's choices.