So, basically their version of modernization is to disassemble a ton of old nuclear weapons and replace them with... nothing.
W76-1 warheads are being produced by the NNSA at the Oak Ridge National Laboratory. They plan to produce 2,000 by 2018. The W76-1 warhead is refurbished W76 warhead with a new nuclear explosive package, arming, firing, and fusing system, gas transfer system, associated cables, elastomers, valves, pads, cushions, foam supports, telemetries, and other miscellaneous parts.