The document summarizes the past, present, and future of HIRAD (Hurricane Imaging Radiometer), which aims to provide high-resolution microwave measurements of hurricanes from an airborne platform. It describes the early work using SFMR (Stepped Frequency Microwave Radiometer) in the 1980s that inspired HIRAD. HIRAD was conceived in the early 2000s and involved several phases of design and development, culminating in its first test flights in 2010. Upcoming plans include HIRAD participating in hurricane field campaigns to collect science data. The document outlines HIRAD's design including its planar antenna array and correlating receiver architecture.