Blocking charged particles from an electron accelerator is challenging, as electrons require a hard vacuum to travel effectively and are difficult to contain once they escape. Lead can stop slower electrons, but those accelerated in linear accelerators typically possess higher energy and are harder to halt. The discussion raises concerns about the feasibility of targeting individuals with such technology, emphasizing that it is not possible to direct electrons through walls or air without significant detection. The conversation suggests that perceived targeting may stem from sleep issues rather than actual exposure to particle accelerators. Overall, the consensus is that the scenario described is implausible and may indicate underlying sleep disorders.