Complex sentence: He has the Puppeteers construct what he dubs the "Skydiver" to his precise specifications, supposedly to ensure he survives to return with the relevant data: an advanced sensor package, a high-powered thruster--and a high-powered laser.
Split into simpler sentences: He has the Puppeteers construct what he dubs the "Skydiver" to his precise specifications, supposedly to ensure he survives to return with the relevant data. It includes an advanced sensor package, a high-powered thruster, and a high-powered laser.