Boeing is one of the two largest commercial and military aircraft manufacturers in the world. On the commercial side, Boeing's primary products are the 737 narrow-body jet and the 787 wide-body jet, which together drive the vast majority of Boeing Commercial Airplanes (BCA) output. Boeing is also developing the 777X wide-body, intended for long-haul international routes, with first delivery targeted for 2027. On the defense side, Boeing's key programs include the F-15 and F/A-18 fighters, the KC-46 tanker, the AH-64 Apache helicopter, and the MQ-25 unmanned tanker, plus a recent win on the F-47, the U.S. Air Force's sixth-generation fighter program. Boeing sells commercial aircraft directly to airlines and defense products to the U.S. government and allied militaries. Boeing operates three segments: BCA (~40% of revenue), Defense, Space & Security (~33%), and Global Services (~23%). Global Services provides MRO, spare parts, and training across Boeing's commercial and military fleet, and is the most consistent financial performer of the three. Boeing's commercial business model involves heavy upfront R&D investment, with customers paying deposits to secure delivery slots and the bulk of revenue recognized at delivery. Margins improve as production rates scale and Boeing moves up the learning curve. Defense works on a mix of cost-reimbursable and fixed-price contracts; fixed-price development programs have been a persistent source of losses. Boeing's near-term priorities are ramping 737 production toward 52 per month and 787 toward rate 10, certifying the 777X, and stabilizing its defense programs.