Michael Green argues that wireless communication in an increasingly crowded radio spectrum is inherently and increasingly hazardous for command & control operations. Machine to machine (m2m) / Internet of Things (IoT) communication between embedded devices is particularly at risk. As such ?critical? m2m messages sent over wireless should never be relied upon to be ?safely? received. All is not lost, in addition to best practice risk mitigation, new technologies are being applied to wireless that will ensure messages that get delivered can be more trusted, thus enabling safer sensing, command & control of assets at distance.