"Rolling the Equipment"

The other night I was on an airline flight...

The weather was VFR.

The plane did a low approach, wheels maybe 50' above the runway, and about
halfway down the runway kicked the engines on and did a go around.

The pilot came on and indicated that there was "an indicator light" that
caused them to abort the landing, but that it had been reset and the plane is
OK now.


When we landed on the next approach, they had the equipment rolling - 4 or 5
Fire Engines, a couple of police cars, and two yellow-strobed Port Authority
vehicles. The landing was uneventful, and the fire trucks went back in, but a
police car and a PA vehicle followed us all the way to the gate.


Based on the low approach, I initially assumed the indicator light was a gear
indicator.

But would they roll equipment on a second attempt if the indicator was
cleared?