US continues to upgrade W88 nuclear warheads for Trident II intercontinental ballistic missiles with a launch range of 12,000 km

W88 warhead program performs successful tests

NNSA Produces First Upgraded Warhead For Sub-Launched Nukes - Breaking Defense

W88 Alt 370 First Production Unit Complete; Production Run Possible in Early CY22 - ExchangeMonitor

Nuclear official says warhead modernization program on track despite COVID, GAO concerns

What would happen if a nuclear warhead hit a nuclear powerplant? - Quora

Hans Kristensen on X: NNSA says W88 Alt370 Production Unit was completed 1 July “one month ahead of schedule” Ahem: Initially scheduled for 1QFY20, it was delayed until 4QFY21. So ahead

Newly Declassified Data Shows Unexplained Increase In U.S. Nuclear Warhead Stockpile

Reliability of nuke triggers questioned – The Denver Post

Thirty-Year-Old W88 Nuclear Warhead Finally Gets Upgraded, Is Now Ready to Fire - autoevolution

Maps Show Biden's New Nuclear Bomb Compared to Most Powerful US Weapons