L3Harris Technologies is rallying in after-hours trading following the announcement that the company secured an $876 million contract modification from the U.S. Navy for the Next Generation Jammer Low Band program. This significant award, which supports prototype hardware and flight testing, follows the company's recent expansion of its production capabilities with the opening of a new solid rocket motor facility in Camden, Arkansas. While the stock saw modest momentum earlier in the week with upward earnings estimate revisions from analysts, this major government contract serves as the primary catalyst for the current move, distinguishing the company from its peers in the aerospace and defense sector.