Grantham cupped a hand to his ear and screwed up his face to indicate that he couldn't hear over the din. Then the noise subsided as the President stood silently again so that he and everyone else could all catch their breaths.
'It's the drones,' Carver repeated. 'That's how Tyzack is going to do it.'
'You sure? They're not armed or anything,' said Grantham sceptically. 'But call it in if you think you're on to something.'
On stage Lincoln Roberts was moving to the next section of his speech. 'Pretty soon I'm going to tell you all how I believe we can use the power of our armed forces and the strength and justice of our cause to beat the people-traffickers and slave-traders. But first, I want to show you what slavery looks like today; what form its victims take. I'd like to introduce a very special, very brave young woman whom I had the privilege of meeting earlier today. She comes originally from the land of Armenia. Some of you may have heard or read of her story… how she was betrayed by a member of her own family and handed over to men of unspeakable evil and brutality… how she was bought and sold just like my ancestors were… how she was forced into prostitution against her will; beaten, raped and abused. To understand this young lady's courage, just know that as we were coming here I showed her the words that I have just spoken to you, words that describe her shame and degradation. Yet she still agreed to stand by me today because she felt that it was her duty so to do – her duty to the women who still suffer as she once did. It is my profound honour to introduce to you… Miss Lara Dashian!'
While Roberts was making his introduction, Samuel Carver was trying to get a message through to Assistant Commissioner Manners. The officer to whom he spoke did not have his name on the official list of the communications system's approved users. He certainly wasn't willing to disturb his commanding officer at such a vital point in the day's proceedings. And anyway, he could not hear, let alone understand what Carver was saying over the cacophony of background noise. In the end, he cut Carver off without a word of warning, still less apology. On HMS Daring one of the seamen operating the Sampson radar displays called over an officer. 'There's something odd going on here, sir. It's the area directly above where the President is giving his speech. I'm seeing three spotter drones.'
'Yes, what's the problem?'
'There are only supposed to be two.'
'So which one isn't meant to be there?'
'I don't know, sir. The drones don't carry any kind of identification beacon, they're too small. They're only the size of model airplanes, sir.'
'What's the altitude?'
'About one hundred and fifty feet, sir.'
The officer thought the problem through. Even if there was an extra drone, and there was something suspicious about it, they didn't know which one it was. Even if they did know, they could hardly blast it out of the sky: that close to the ground, the exploding missile would cause a host of casualties in itself.
In the circumstances, he did the sensible thing. He covered his backside, called the ship's bridge, informed them of the situation and passed the problem up the line.
89
Damon Tyzack felt just fine about what he was going to do. If there was one thing he really hated, it was pompous, sanctimonious moralizing. This President Roberts was the worst kind of preachy, self-righteous politician. It would really be doing the world a favour to get rid of him. And… ah, perfect! Here came little Miss Dashian, looking very nicely scrubbed-up and respectable. He thought of the whore he'd carried to his hotel bed in her high heels, micro-skirt and painted tart's face.
You don't fool me, my dear, Tyzack thought. You'd still be anybody's for five hundred dirhams.
He looked down at the iPhone. Its screen displayed a map of the Broad Quay area. A moving, flashing dot showed the position of the drone that Geary and his men had launched from the playing fields. It was moving towards the stage, its precise location tracked by a pair of ever-changing co-ordinates at the bottom left of the screen. After yesterday's practice runs, Tyzack knew precisely where the drone had to be, at what altitude, and at what speed it had to be travelling to ensure the delivery of its payload to the precise spot where the President and the whore were standing.
And now she started to talk. 'My name is Lara Dashian…'
'Well, that does it,' murmured Tyzack, his finger hovering over a digital 'Fire' button displayed at the screen's bottom right.
The drone had settled on a course that aimed it directly at the stage. It was moving in.
Just a few seconds to go now. Carver had been reduced to screaming down the microphone, 'Get him off the stage! Get the President off the fucking stage!' But the people at whom he was shouting either could not or would not hear him.
Lara Dashian had begun to speak. This, Carver realized, was the perfect moment for Tyzack to strike. He must think Christmas had come early, being able to get rid of his prime target, the President, and an inconvenient witness to a past crime.
There was only one way to stop this.
Carver stepped right up close to Grantham and yelled in his ear, 'Give me your gun!'
Grantham shook his head.
'Give me the bloody gun!'
Grantham turned and pushed Carver away.
Carver stepped back, away from Grantham's hand, fractionally adjusted his balance and then sprang forwards. As he moved he swung the heel of his right hand, slamming it into Grantham's face, just to one side of his chin. The blow caused Grantham's head to jerk round, wrenching the tendons of his neck and sending his brain bouncing off the inner walls of his skull like a pea in a whistle. Grantham was lifted off his feet and flung back across the roof until his body slammed to a halt against a raised air-conditioning vent.
Carver walked across and removed Grantham's gun from its shoulder holster. SIS must have taken advice from the Special Forces because the gun was a SIG-Sauer P226, precisely the same model that Carver himself always used. That would make life easier.
Something had to, because what he was about to do was verging on the impossible.
He stepped to the edge of the roof and looked over the parapet to the stage, at least one hundred yards away. The distance was at the very furthest limit of the gun's effective range. He was shooting downwards, into and across a stiff breeze coming in off the river behind the stage.
But he had no alternative.
Carver raised his gun, aimed it at Lincoln Roberts, President of the United States, and fired.
90
'No!' shouted Damon Tyzack as four gunshots rang out and one of the clear perspex screens that acted both as the President's autocue and his shield shook with the impact of the bullets.
On the display in front of him the drone was still five seconds away from the point at which the two anti-personnel grenades mounted in place of the conventional surveillance equipment could be released.
Before the sound of the shots had died away, the first Secret Service man had hurtled across the stage, grabbed the President and was manhandling him away. Roberts appeared to be trying to stop him. He was reaching out towards the girl, but the agent, now joined by two of his colleagues, had virtually lifted their charge off his feet and was carrying him to safety.
Two seconds left and Tyzack – his system surging with a toxic cocktail of rage, impotence and overwhelming frustration – thought about firing on the President himself. But his own gun was still holstered. It would take too long to draw, aim and fire. In any case, unless he shot the three Secret Service men up there with him before aiming at their President he would be signing his own death warrant. There was certainly not time to hit all four targets. From now on in it was strictly a damage-limitation exercise.
He could hear the Americans talking to their headquarters.