Canadian Space Agency astronaut David Saint-Jacques works inside the Unity module

iss058e011232 (Feb. 8, 2019) --- Canadian Space Agency astronaut David Saint-Jacques works inside the Unity module performing preventative maintenance on the Simplified Aid For EVA Rescue (SAFER) unit that attaches to U.S. spacesuits. The SAFER would be used to maneuver an astronaut back to the International Space Station in the unlikely event they became untethered during a spacewalk.