Shares of Lockheed Martin (LMT -4.16%) fell 4.2% on Tuesday as stronger-than-expected quarterly results from the defense and aerospace giant were overshadowed by its mixed outlook for the coming year. The market also appears concerned for the risk of delays surrounding the first deliveries of its next-gen F-35 fighter jets. A solid end to 2023 for Lockheed Martin For Lockheed's fourth quarter of 2023, net sales declined 0.6% year over year to $18.87 billion, while its adjusted (non-GAAP) earnings increased ...