Hmm... - Starliner's current showstoppers all seem to be in its Service Module's propulsion systems - Relatively little delta-V is needed to deorbit from the

Hmm... - Starliner's current showstoppers all seem to be in its Service Module's propulsion systems - Relatively little delta-V is needed to deorbit from the space station - Rocket Labs has been zealously developing several "as a service" versions of their Photon satellite bus/kickstage: https://en.wikipedia.org/wiki/Rocket_Lab_Photon#Photon_versions https://en.wikipedia.org/wiki/Rocket_Lab_Photon#Photon_versi... SO: Could Rocket Labs quickly launch a "space tug" Photon, capable of replacing the Starliner Service Module's propulsion system well-enough for the undocking and controlled de-orbiting? Hard to imagine NASA allowing that with a manned Starliner. But is there any current capability to handle "dead" spacecraft near the ISS? Docking ports are very limited, and "drifting nearby" can be damned dangerous in orbit.