In some embodiments, a strap assembly has a chest compression strap having a loop at one end, a connection fitting having an anchoring strip at one end proximate a connection fitting connector and configured to attach to a pack at another end opposite the anchoring strip, and a shoulder strap having a channel proximate a shoulder strap connector and configured to retain the anchoring strip when the connection fitting connector is attached to the shoulder strap connector, the shoulder strap being configured to attach to a pack at another end opposite the shoulder strap connector, the shoulder strap having a guideway through the channel configured to receive the chest compression strap loop, wherein the anchoring strip engages the loop when the anchoring strip is retained in the channel.