The high-power rocket that Erin has been assembling in this series is intended as an easy-to-build dual deployment rocket. That means it is going to carry electronics to fire off two separate ejection charges. In this week's video, we'll start assembling the electronics bay (called the e-bay or an altimeter bay). The e-bay is the standard 4-inch Mad-Cow ebay (www.ApogeeRockets.com so this video can also help you if you are interested in that product as well. What you'll see is gluing the bulkheads in place, assembling the sled that hold the electronics, and putting the external ring on the coupler that houses everything.