Question: Are Logan International Airport and Trenton–Mercer Airport both US-based airports?
Sentence (from "Trenton–Mercer Airport"): Trenton–Mercer Airport (IATA: KTTN, ICAO: TTN) is a county-owned, joint civil–military, public airport located four miles northwest of Trenton in the West Trenton section of Ewing Township, Mercer County, New Jersey.
Relevant evidence: Yes