WASHINGTON – The Intelligence Advanced Research Projects Activity, within the Office of the Director of National Intelligence, will launch the Modeling of Reflectance Given Only Transmission of High-concentration Spectra for Chemical Recognition Over Widely-varying eNvironments —“MORGOTH’S CROWN” —Challenge as part of the Standoff ILluminator for Measuring Absorbance and Reflectance Infrared Light Signatures—“SILMARILS”—program. The Challenge will launch later this month and invites solvers from around the world to develop algorithms to accurately predict the changes in a chemical’s infrared spectrum caused by changes in its molecular environment.