Not So fast ....The companies mentioned are established. What you guys fail to know or discover is. that Evolv's leadership sold REVEAL imaging for HUNDREDS OF MILLIONS to SAIC /Leidos. The REVEAL IMAGING unit is still going strong within Leidos. Leidos also bought out the L3 Security Provision Milimeter wave division. I wonder what Leidos will buy next , I mean REVEAL has been a HUGE global success for them . Doesn't take a genius does it ! As for the other companies ALL massively established players in Security like Garrett, well their Quick Q sells massively and its WAY cheaper than PATSCAM. https://garrett.com/security/walk-through/accessories#software Garrett PD6500i with Quick Q AI sells for less than $14,000 USD all in. CEIA Opengate similar price all in https://www.ceia.net/security/product.aspx?a=OPENGATE