Daily Digest

Cleaning up low Earth orbit, delivering medicines by drone, flying high on the power of the Sun - we take a look at some of the technology highlights in 2018.

There was continued progress in 2018 for unmanned aircraft systems, including some that could stay aloft in the stratosphere for months, or are recovered in midflight by transport aircraft with robot arms.

Photographers captured images of military helicopters in environments ranging from deserts to snow-covered mountains, as well as search-and-rescue training.

Workforce-development challenges lurk as MRO industry continues to grow.

But the final frontier remains the playground of only the most adventurous investors—and for good reasons.

From ongoing tensions with Iran and terror organizations to a change in how the U.S. dispenses aid, companies are scrambling to adjust.