The DEFCON Warning System advises citizens in the Ukraine theatre being preparing in the event of a nuclear attack.
There is no cause for alarm, and there is no imminent nuclear threat at this time. This is only advisory.
In additional to shelter, supplies are needed. A shelter without supplies is not a shelter but a tomb.
The following list comes from ki4u.com
This list provides only for short-term survival. Likely you will need to expand this list to survive longer than the 2-3 days this list provides for.
Better to risk being a little early when securing your families essential food and supplies, rather than a few hours too late and going home empty-handed…
Ready-to-eat foods (granola/energy/protein bars, snack-paks, raisins, cheese, etc.)
Some perishable foods (breads and fruits like bananas, apples, oranges, grapes, etc.)
Canned goods (soups, chili, vegetables, fruit, tuna, meats, beans, peanut butter, etc.)
Assorted drink mix flavorings (with no cold drinks, just plain water, kids will appreciate it!)
Plenty of potent Multi-Vitamins, Vit C, Pepto Bismol, aspirin, tylenol, other OTC meds, etc.
Iodine solution, like Betadine (16 ounces)- NOT TO BE INGESTED OR SWALLOWED!
Largest sacks of rice, beans, flour, potatoes, pasta, quick oats and other grains
Multiple big boxes of dried milk (Could include/use some inside shelter, too.)
Multiple big boxes of pancake and biscuit mix & syrup
Large bag of sugar and jar of honey
Large 2 gallons or more of cooking oil
Baking powder & soda & yeast & salt & spice assortment pack
Bottled water (especially if home supplies not secured yet)
Paper or plastic plates/bowls/cups/utensils and paper towels
Quality manual can opener, 2 if you don’t already have one at home
Kitchen matches and disposable lighters
New metal garbage cans and liner bags (water storage & waste storage)
5 or 6 gallon bucket and smaller garbage bags sized for it (toilet)
Pool noodle to cut slit lengthwise to fit as seat for toilet bucket
Toilet paper and, if needed, sanitary napkins, diapers, etc.
Baby wipes (saves water for personal hygiene use)
Flashlights (ideally LED) and more than one portable radio
Plenty more batteries, at least three sets, for each of the above
Bleach (5.25%, without fragrance or soap additives)
Alcohol and Hydrogen Peroxide and hand sanitizers
Prescription drugs filled, and as much extra as possible
First aid kits and Fire extinguishers
At least a couple inexpensive N95 particulate respirator masks for each member
Cheap plastic hooded rain ponchos for everyone
Water filters and all other camping type supplies, such as portable camp toilet,
cook stove and fuel, ammo, etc., if any sporting goods stocks still available.
And, of course, rolls of plastic sheeting, duct tape, staple guns, staples, etc.