Take note Egypt
So the incident in Egypt back in August when a Thomson jet had to take evasive action to avoid a missile of some kind was explained away as a routine military exercise. Alarming though this Californian incident may have been to distant onlookers, at least the military thought to close off the relevant civil airspace. On the basis that I can't really believe even the Egyptians would have been that reckless, I call diplomatic bullshit* on the official explanation. Sorry to be topical.
* Or more likely, our so-called investigation ran to asking the Egyptian authorities what happened, and they replied, "Oh no, we have absolutely no terrorists able to bring down an aeroplane by missile (let alone a cargo hold bomb) and destroy our tourist trade overnight, it was just our boys with their toys. Nothing to see..."