Well I am unable to give you any firm ideas right now. My husband was also laid off the same day yours was. He is also a technician but on cars not planes. One thing we have been told and are looking into is oil companies needing techs. We have been told first hand from someone in the business that they always needs mechanics for different things. Normal sized vehicles like families drive to big trucks and equipment.
We were told they pay great and give you benifits with a company vehicle upon being hired. Now I am not sure how true all this is as we will not be able to find out until Monday. It is an idea though.
I will keep your family in my prayers and just know you are not alone. I also have a princess age 7 and an angel boy age 11. Stay strong, be patient with your husband,kids, and yourself. Above all keep faith. Always think through any offers as a desperate decision could backfire. This happened to us several years ago. You have my prayers and belief that all will turn out okay for both of our families.