 Lockheed Martin plans to build 20 of these planes this year, but they have the capacity to build as many as 36. With Military Matters, Madison Allworth, Fox Business. Take a pause. Foxtail grass is growing across much of the American West, and it can produce a lot of pain for your pets. It has seeds shaped like arrows, and those can get caught in a dog or cat's skin. Kind of a poker on one end, kind of a feather on the other side. So it can only advance one direction, and when it advances, it can't back up.