The system is small, light and easy to install, Osterhout claims, and it's easy to see as much from a quick glance. Smart glasses are usually bulky by themselves, but they're relatively compact inside an oxygen mask.

Not surprisingly, FedEx is the first customer. It's using SAVED for both training and real-world flights. There's no mention of other customers just yet. However, it's easy to see other couriers and airlines adopting wearable tech like this in the future when it could save lives and, in the best cases, avoid crash landings.