The Spectral Polarimetric Instrument Recommendation and Evaluation (SPIRE) project compared the use of spectral and polarimetric instruments for standoff detection and discrimination of explosive hazards in varied environments. Fifteen instruments primarily comprising small fieldable focal plane polarized imagers in the visible, shortwave infrared, and longwave infrared bands were deployed in three kinds of configurations, namely on masts, on ground vehicles, and on an uncrewed aerial system, and collected many terabytes of data in nine field campaigns imaging thousands of targets and natural backgrounds in desert, arctic, temperate green, and tropical environments. In addition to the primary data from these instruments, the SPIRE team collected observations of deployability and operability in these environments as well as other field data including meteorological, radiometric, and other metadata necessary to assess technology performance and ensure robust algorithm development. These data are accumulated on a networked platform for sharing with research and development partners.