in 2016, harrison founded the md5 national security technology accelerator, a partnership between the united states department of defense and several american universities. he served as the inaugural director from 2016 to 2017. as part of his work at md5, he promoted the development of dual-use technology startups that address critical national security issues and pioneered the use of hackathon and crowdsourcing approaches to prototype new military capabilities. in 2018, harrison served as senior innovation advisor to the army futures command task force, where he developed the innovation strategy for the army's future force modernization enterprise. on july 1, 2018, harrison was appointed command innovation officer at the army futures command in austin, tx. in this position, his work has focused on expanding opportunities for startup-derived products to transition to formal army programs and leveraging soldier insights as a basis for new military capability development.