Under the ISN's current fifth contract (ISN-5, active from 2023) research will be organized into five Strategic Research Areas (SRAs) representing the most fundamental subject areas in the ISN portfolio. SRAs are designed to address broad strategic challenges facing the Soldier, and are subdivided into specific Projects. The five SRAs — Photonics, Electronics, and Quantum Sciences; Sciences of Materials for Extreme Environments; Energy Sciences; Devices and Materials with Advanced Functionalities; and Soldier Medicine — comprise 15 projects guided by 23 distinct principal investigators (PIs).