Defense stocks gained on the back of Israel's attack on Iran, extending large rises for a sector that has benefited from a series of conflicts in recent years. The moves on Friday come despite Israel making most of its own weapons,

The Dow Jones Industrial Average was heading for a weekly loss in early-afternoon trading Friday, with stocks remaining weighed down by worries over Israel’s attack on Iran. The Dow’s 1% drop Friday had it on track to fall 0.