To save energy when using the oven try to cook in batches, cook more food and freeze or refrigerate the leftovers. Avoid opening the oven door unnecessarily, heat loss will require the oven to heat up again and waste energy.
When a Marine makes Gunnery Sergeant (E7) he designates on his fitness report whether he'd like to be selected for 1stSgt or MSgt. The Marine Corps has the final decision and he may not get the one he wants. Most do, but not all. There are MANY mo...
One is a command billet and the other is an MOS support billet. A command billet will take precedence if all other factors are equal (time in grade, time in service). Most Gunnery Sergeant promotees are evaluated against their career track and asked what they would like to be.