ConocoPhillips

The aircraft is at 1100 ft, 130 kt, heading 90° — clearly on departure from KIAH or a nearby field. The only ALIGNED candidates (Δhdg ≤ 25°) are 1XS1 (Δhdg 12°, 20 nm) and KIAH (Δhdg 19°, 4 nm). KIAH is the home base, appears in recent flights as a frequent arrival, and the plane is only 4 nm away at low altitude, consistent with a short departure leg back to base. 1XS1 is a recent alternate but less likely given the plane's proximity to KIAH. Past predictions show a pattern of correctly guessing KIAH when the plane is near Houston, and the briefing confirms KIAH as home base.