Classicly

When the Martian authorities got the news from Ul they appealed to Ferne for assistance. The U.F.S. Rocket Auxiliary was the fastest transportation available on Mars, faster than anything the Martians had. The Ambassador ordered the rocket fleet to assist in the immediate evacuation of stricken Ulans to Marsport medical stations.

In addition a team of Martian and Earth Federation technicians boarded the lead ship, Electra. Equipment, food and medical supplies were crowded into the remaining ships. And a large fleet of Martian land machines went into action. The land machines were like enormous onyx bowling balls, rolling heavily but smoothly on bands of gripper treads. They would go as far as they could into the hills, and the clumsy, short-hop Martian wings would make the rest of the trip to Ul.