In the Extra scenes "One Ship" Ep.2 Zenobia, Avasarala is talking to an MCRN Admiral on the monitor. The Admiral's seat harness across his chest disappears and re-appears a few times in a second when views are going back and fourth from him to Avasarala.
Bobbie who was sent by Avasarala on specific mission of capturing the Azure Dragon, found jumping over from the Roci to the Azure Dragon with the EMP to deploy the EMP, better plan and strategy than gearing up for ability to shoot the target with the EMP.
The existence of the Azure Dragon is a pretty stupid strategic mistake on Marco's part. Since the asteroids are not smart munitions there would be no need for a command center to track and control them. Having the Azure Dragon leaves the Belter forces open to losing their best weapon by a single point of failure. The better option would be to just launch the rocks and leave no record of where they were.