Luke needed a closer look at the wall itself. With his head down, he started walking across the plaza, losing himself in a little crowd of tourists who were doing the same thing. They passed a post, about a metre high, bearing a tourist sign written in Hebrew and English: ‘on the sabbath and holy days, smoking, photography and cellphone use are strictly forbidden.’
A voice. Behind him. ‘Excuse me. Excuse me! ’ It was urgent. Luke felt his fist clenching as he turned to look. A thin man with a wispy beard and square spectacles was running towards him, suspicion on his face. ‘You, sir. Stop.’
Thirty metres to the exit. If he wanted to get out of here, he needed to do it now.
‘You cannot approach the wall bare-headed,’ the man said.
‘What?’
The guy held out a thin cardboard skullcap. Luke felt his muscles relaxing.
‘Right,’ he muttered. ‘Thanks.’ He put on the cap and continued his approach. On his left, he passed a low, sand-coloured building with a series of arches built into the foundations. Most of his attention, however, was on the wall itself.
The lowest seven courses of the wall were made from blocks about a metre wide and half a metre high; above that, they were a quarter the size. The blocks were sturdy, certainly, but also crumbling away in places and with weeds and plants growing out of the mortar here and there. It struck him that a Regiment demolitions expert could bring the wall down in minutes. He observed a couple of tourists squeezing hand-written notes into the cracks. It occurred to him that the cracks in the wall could easily be filled with explosives, but he discarded that idea as soon as it came to him. The wall was surely guarded 24/7 — stick anything except a prayer note in it and you’d be flat on your face with an M16 in the back of your head.
Think like the enemy, he told himself. Anticipate their movements.
Prepping for a combat situation, he would learn in advance what he could about the enemy’s SOPs. In Iraq they’d been alert to the dangers of roadside bombs. In the Stan, IEDs. He understood the psychology of war. He understood that if a method of combat worked well once, chances were it would work well again. The Micks had never stopped using car bombs or letter bombs just because Special Branch were cute to it. Even the Yanks and the British were addicted to their drones and guided missiles. In battle, you do whatever gets the job done best.
What were Stratton’s SOPs? How was he going to strike?
To his left, as he faced the wall, there was a low arch leading into the building adjoining the plaza, about two metres at its highest point, and a single glance told him that the wall itself continued just as the tour guide had said, forming a kind of tunnel. Luke approached it. If the wall was not just the exposed section at the plaza, he needed to examine the rest of it. To put himself in the mindset of a terrorist and work out where the weak points of this target were.
He was in a dimly lit room with a vaulted ceiling. Beyond it the tunnel continued. There were thirteen people in here, all dressed in traditional black garb, sitting on seats. The atmosphere was quiet, prayer-like. One of the men looked over his shoulder and, seeing Luke — casually dressed and dirty — gave a look of disapproval. But then he went back to his praying and Luke passed through the room and along the tunnel.
He moved quickly, but as he went he took in the geography. The tunnel followed the wall, along which there were more men seated and praying. After another hundred metres or so, he arrived in a second, wider room that was more populated than the first one — thirty people, maybe more. Against the wall there was a Perspex plaque with white writing — in Hebrew at the top, and underneath in English: ‘opposite the foundation stone and the site of the holy of holies’. Luke edged through the little crowd, and continued his recce.
As he continued north, the tunnel became less well lit, the walls more roughly hewn. He passed a metal grille on his left, and anterooms off the main tunnel. Further on, the tunnel was held up by a series of wooden joists and columns. There were fewer people here, and he passed what looked like ancient water pits. A sign told him they were cisterns from long ago. Checking to see he was unobserved, he worked a small piece of loose mortar away from the opposite wall and dropped it into the cistern. It took a second or so before he heard the mortar hit the ground. Three or four metres deep, he reckoned. Possible to cache something there? Unlikely — to remove it would risk drawing attention to yourself. He continued down the tunnel. When he had walked about 400 metres in all, the tunnel ended abruptly. Perhaps there had once been an exit, but now it was blocked.
Luke hurried back along the tunnel. Past the cisterns. Past the joists and columns. Past the grille.
He suddenly halted and looked back.