let's get straight to our brussels bureau chief, jones hayden. jones, we tried to understand exactly what we are seeing. this is not the first time belgium was at the heart of such investigations of terror. talk us through exactly what we know so far. jones: well, you are right. ever since the paris attacks, that investigation quickly came back to brussels, and to the maalbeek area here. at one point in november, we were on lockdown because of the threat that something and that it was about to happen. now it looks like we are going back on lockdown because something has happened. this certainly seems like a coordinated attack, and certainly appears to be in response to the apprehension on friday of the main suspect, the main living suspect in the paris attacks from last november. so people, i think, are really guarding for another intense period of soldiers on the streets, police on the streets, not knowing exactly what kind of terrorist threat is out there. that's what we have in these two bombs going off this morning at the airport. in the depar