  Homeland security    After Greg trimmed Willy’s feet and
replaced his missing front shoe yesterday, I took Willy for a
little test trot in hand across the parking lot despite the
rain.  After a few days of being stuck in a stall to protect his
tender sole, he produces what I call his “display trot.” To
visualize it, imagine an inner monologue that goes something
like “I am Wilhelm the Magnificent, and all tremble before me…”
He manages to convey a majestic impatience with my insufficient
gait without actually sticking his nose beyond where it is
allowed, arching his neck and flinging his feet instead. Even
out of the corner of my eye, I can’t help but admire it, and
decide to continue onto the round track to give him more scope.
Suddenly the bark explodes in front of us and Willy’s nose
plunges between his feet. He skids to a halt, the whites of his
eyes showing.  There is a Killdeer, fanning its tail, beating
its wings wildly and rushing towards him, emitting a shrill,
percussive battle cry.  Wilhelm the