Two
There were bullet holes almost tracing a chalk outline around where his body had been and Q was pretty sure a fire had started and was rapidly heading towards them. Despite all this he really couldn't be any happier. He did however decide to celebrate the act of living at a later date when he was sure he still had something to celebrate. Maybe Bond could come over looking like he does now, all heroic, shimmering sweat, torn clothes and ruffled hair. The perfect celebration in Q's momentarily distracted mind. Somewhere between the fiery explosions and bullet showers Q had softened a little to the idea of Bond being not quite so horrible after all.
He thought it might be a combination of the way Bond put his hand softly on the small of his back as he urged his Quartermaster to run faster from the terrifyingly murderous onslaught. Then they way Bond shoved him roughly to the ground behind some crates, jumping after him to avoid the inferno of yet another explosion. Who knew there could be so many? Or that Q would enjoy the minglings of Bond's action and actual personalities so much?
The adrenaline and the way Bond's eyes were shining a colour he'd never seen before were actually making this whole ordeal, kind of fun. His first field agent experience hadn't been going completely wrong so far and Q thinks he might actually be handling himself reasonably well. That was until some terrorist decided to come out of nowhere and take him hostage.
As they dragged him back Q met Bond's eyes and saw that he would save him. His eyes revealed a level of emotion not usually associated with cold, James Bond. Q would have worried more about it but it was yet another thought to save for a moment when he wasn't in mortal danger, perhaps.
Dragged into the next room and sealed with a solid metal door, already six feet underground in this terrorist hideout Q was no longer feeling entirely confident. Pushed on his knees to the floor with a gun to his head he didn't have as long as he thought to contemplate the end of his life before Bond managed to blow through the door to his rescue.
Once all the terrorists were neutralised Bond knelt before Q and helped him to stand. As their eyes met once more the emotion Q thought he saw before was still there. He thought it might be worry, which he supposed was justified given the situation they were in.
Having put a serious dent in the terrorist population the two men were able to eventually make their way back to the surface, mission completed.