The Perils of Interplanetary Exploration

There was a burst of meteor activity and under cover of swooping light trails, their capsule entered the earth's atmosphere. It was well protected from the expected heat and though it got rather warm inside, the hull maintained its integrity. Deploying the braking system, they fell to Earth at night in an area of soft soil. This was a colonisation. Thousands of their people emerged from the capsule under cover of darkness. They made for a huge building in which to take shelter. Next morning, Alice shouted to her husband.
"Will you ring Pest Control? We've got an ant invasion!"