The US military is turning its attention to electric aircraft, particularly those powered by hydrogen fuel cells. Hydroplane, a small business startup founded by Anita Sengupta, a former NASA employee, is at the forefront of this innovative technology. The company has developed a modular hydrogen fuel cell propulsion system, catching the interest of the US military due to its potential to enhance performance and reduce emissions. Hydroplane has already manufactured a 120-kilowatt system under an Air Force contract and is working on a more powerful 500-kilowatt version for Army aircraft. Additionally, the US Navy has awarded Hydroplane a contract for a ground power unit based on its fuel cell technology. The focus on local hydrogen production methods is gaining traction to address logistical challenges. The Office of Naval Research is exploring a system that generates hydrogen from aluminum pellets and water, offering a safer and more sustainable alternative to traditional fuel transportation. The article also highlights the potential of electrolysis systems paired with renewable energy sources to produce green hydrogen for fuel cells, demonstrating the military's commitment to innovation and sustainability.