Staying under a watchful eye

First there was Air France flight 447, and then, Malaysia Airlines flight 370. They were there, and then they were gone. MH 370 made no distress call, there were no signs of technical malfunction or engine failure, and the weather was just fine. But, somewhere over the Andaman Sea, something had gone horribly wrong.

https://www.wingsmagazine.com/innovations/staying-under-a-watchful-eye-11655