Did a little research this morning and I don’t think a Stinger or similar MANPAD can be ruled out. A bomb on board is also possible.
IF so, then we could see a reversal of roles used against the US by Russia in aiding terrorists to get REAL weapons across the porous border to sleeper cells here with a subsequent campaign of domestic terror attacks.
Simple example: the Christmas season approaches and malls are a terrifying potential starter for terrorists armed with a plastique like the notorious cemtex.
Manpad?