Twilight's Last Gleaming (1977)

Post-apocalyptic survivors find refuge in the Rocky Mountains to hide from giant, insect-like creatures that can't live above 8,000 feet. However, when one of them needs life-saving supplies, they risk it all to venture into the danger zone.

A young boy finds himself pursued by two assassins in the Montana wilderness, with a survival expert determined to protect him, and a forest fire threatening to consume them all.

A crew of young environmental activists execute a daring mission to sabotage an oil pipeline.

After a failed assassination attempt, a soldier finds himself stranded in the desert. Exposed to the elements, he must survive the dangers of the desert and battle the psychological and physical toll of the treacherous conditions.

In the near future, on a decimated Earth, Paul and his twin sons face terror at night when ferocious creatures awaken. When Paul is nearly killed, the boys come up with a plan for survival, using everything their father taught them to keep him alive.

A pioneering family fights back against a gang of vicious outlaws that is terrorizing them on their newly-built farm on the plains of Montana.

The Gardner family moves to a remote farmstead in rural New England to escape the hustle of the 21st century. They are busy adapting to their new life when a meteorite crashes into their front yard, melts into the earth, and infects both the land and the properties of space-time with a strange, otherworldly colour. To their horror, the family discovers this alien force is gradually mutating every life form that it touches—including them.

A returning war veteran, stricken with PTSD, gets trapped with his teenage sister on Boston's Tobin Memorial Bridge when a heavily armed group of ex-military revolutionaries take everyone hostage.

When a small outpost is ambushed, a US Army squad must take the battle below ground on a high-stakes mission in a new type of warfare the likes of which they have never seen.

Contact between most towns on Earth has been severed. A small ring-like area in Eastern Europe still has electricity, and maybe even life is being reported from space. What military forces find outside the ring is shocking.