It's nuclear warheads re-entering the atmosphere, luckily only testing this time. here and the pic name says they are peacekeepers. But if it really shows missiles entering the atmosphere, then its a stunner of a pic.
LGM-118A Peacekeeper missile system being tested at the Kwajalein Atoll in the Marshall Islands.
The lines shown are the re-entry vehicles -- one Peacekeeper can hold up to 10 nuclear warheads, each independently targeted. Were the warheads armed with a nuclear payload, each would carry with it the explosive power of twenty-five Hiroshima-sized weapons.
