Yes, the tail end of the vaccination program will be the most difficult since those are the people who are reluctant to get vaccinated. We may never reach 70% unless there's a strong inducement.
Part of that boils down to the enforcement measures you need to apply to implement your policies. The more out of the mainstream you go, the more resistant people become. At the extremes, tight state control becomes inevitable and the policy nuances are drowned out by the harsh measures.
Nowadays a modern light tank design would probably be a stealth tank, relying on optical/infrared camouflage rather than armor. You probably wouldn't see it until a shell is heading your way, and then it would scoot.
The difference being that Russia has actually invaded their neighbor in the recent past and grabbed a massive chunk of territory. Regardless of whether that's right or wrong, it does tend to make folks keep their itchy hands near their guns.
Exclusive look inside the US supersonic presidential jet
Top marks for coolness factor. It won't be the most fuel efficient plane in the sky, but it sure will impress on diplomatic missions.
Either way, the cars are now outfitted with seat belts, airbags, collision detection, signalling devices, and a crumple frame to minimize deaths. It's the same logic as eliminating automatic weapons.
It gives the general impression that they will be losing a lot of firepower. If they have to hold the ground against a strong counter-attack, they may be in trouble.