Scott Perry: “Well, a mortar is what we call an area weapon, so you're not going to shoot a mortar into a window. But what they fire…”

“Well, a mortar is what we call an area weapon, so you're not going to shoot a mortar into a window. But what they fire on, they sometimes shoot long, they shoot over, or they shoot short. So they bracket it. They adjust the tube back and forth until they get it to range. But if you have a known point that you're firing from and a known point that you you're firing to, you can do that with much greater accuracy in much less time. I would suggest that they had that all figured out when they showed up, which is how they were able to deliver rounds on the target immediately.”