Arms Trafficking Ground

After Trevor purchases the McKenzie Field Hangar, he can use the Dune Buggy parked outside it for Oscar Guzman's ground arms runs. Entering the vehicle brings Oscar onto the radio with details of a cargo drop somewhere in Blaine County. Trevor races across the county to recover shipments that have been delivered by air, keeping clear of police attention on the way out. Each run begins at the hangar and ends when he brings the recovered package back to McKenzie Field Hangar.

The first drop lies beside a mobile home on East Joshua Road, where Trevor reaches the package before the Rednecks can claim it and returns to the airstrip. Oscar next sends him to the pier at Galilee. Marabunta Grande members appear on the route and pursue Trevor after he takes the shipment, so he breaks their attention before delivering it to McKenzie Field Hangar.

For the third run, Trevor heads to an old farmhouse in the San Chianski Mountains while the Aztecas search nearby for Oscar's cargo. They give chase once he takes it, but Trevor escapes with the package and returns to the hangar. The fourth delivery is waiting at an old rail station in the San Chianski Mountain Range. Marabunta Grande is close to the drop, forcing Trevor to take the cargo and shake off another pursuit before reaching McKenzie Field Hangar.

Oscar's fifth ground run sends Trevor to a drop near Senora National Park ahead of another group of Rednecks. Trevor secures the package, then encounters a Redneck helicopter during the return journey. Once the threat is gone, he brings the final shipment back to McKenzie Field Hangar. After the five set runs are complete, Trevor can continue taking randomly assigned ground trafficking jobs from the airstrip, each beginning with Oscar's radio instructions and ending at the hangar.