In order for Rocket Lab to recover Electron, it will undertake a series of complex manoeuvres designed to enable it to survive the extreme heat and forces of atmospheric re-entry during its descent to the ocean.
Electron will also be equipped with a heat shield and parachute to slow down its descent before landing in the Pacific Ocean.
There, Rocket Lab's recovery team will be stationed with a new retrieval method to recover Electron from the water, the Ocean Recovery Capture Apparatus, or ORCA.
Electron will then be inspected and tests to ensure it can be reused.
Rocket Lab will move into its final phase of the recovery program, a mid-air recovery programme using helicopters, once a third ocean splashdown recovery mission has been completed.
Running Out of Toes is scheduled to launch about 10pm on May 15.
It will be livestreamed on rocketlabusa.com/live-stream