“Without Spidertracks, it’s hard to trust your judgement that they’re going to do the right thing. Of course, we have certain measures we need to take before we can release them on their flight. When you release students, you’re kind of nervous, although you know that they can do it …

“We would camp in the jungle and stay on-site with the helicopter, then once a week, fly to the closest town, get some fresh food and fly back, and fly people in and out. Throughout the day, we would drop the geologists off on the ground so they could do …