Despite Decades of Stealth, Sticking Points Bedevil F-35 Jet

One of the earliest stealth weapons on record was a stone used by the young Israelite David to kill the Philistine giant Goliath. In the biblical account, David shunned the conventional armaments of his time: sword, helmet, armor. Instead, he went forth with a slingshot and a few stones, kept undetected in a pouch. As any schoolchild knows, one well-aimed fling was all it took to put Goliath down for good. The big guy never saw it coming.

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