A TRACON Supervisor reported an aircraft reported loss of engine power and intention to land in a field but than regained power when they turned on the fuel pump and landed safely at the airport.

Narrative

Aircraft X contact ZZZ LC (Local Control) approximately 12 NW ZZZ stating they were losing engine power and were going to be landing in a corn field. LC asked if the pilot would be able to make ZZZ airport; the pilot stated negative and was looking for a road or field. OJTI paged for additional help to the cab and the FLM (Front Line Manager)/DEV continued training on the combined GC position. LC asked for souls on board (SOB) and fuel remaining. The pilot responded. LC displayed the VFR map on the STARS TDW (Tower Display Workstation) and pointed out us [a highway] which the aircraft was directly over as which the pilot stated he turned on his fuel pump and was able to maintain altitude. FLM called an Alert 2 during this time. The pilot was issued winds and altimeter and stated he wanted to land Runway XX ZZZ. LC gave instructions to make approach strait in to Runway XX. LC coordinated with R2; the pilot then stated his desire to land Runway XY ZZZ. LC instructed the pilot to make approach strait in to Runway XY and issued a landing clearance to Runway XY and issued a wind check. CFR (Crash Fire Rescue) was standing by at the base of the ATCT and Taxiway 1. The aircraft was visually observed over the ZZZ VOR with gear appearing down. The aircraft landed Runway XY without incident and taxied to FBO under their own power. CFR performed a runway inspection and the emergency was terminated.