Honeywell Aerospace, along with Honeywell subsidiary UOP, Airbus, JetBlue and International Aero Engines (IAE), are joining efforts to develop a sustainable biofuel, using feedstocks that do not compete with food or water resources. The five partners will focus on converting bio feedstocks to commercial aviation fuels. Those feedstocks could be algae. UOP, which specializes in refining, has already developed technology to convert natural oils and greases to military jet fuel, under a contract to the U.S. Defense Advanced Research Projects Agency (DARPA).