Shares of Caterpillar ( CAT -4.04%) slumped a little over 5% Thursday morning and were still trading around 4.8% lower as of 12:30 p.m. ET.

Caterpillar delivered better-than-expected earnings per share but faced softer-than-anticipated revenue.

Caterpillar's Defense and Federal Products is supplying Marinette Marine Corporation propulsion engines and generator sets on the lead ship of a new planned fleet of approximately 18 U.S. Coast ...