Isn’t that from the 1950s? Maybe top secret tech has progressed since then.

Worked in a phone store for a bit. And absolutely this.

Thermonuclear secondary stages, A.K.A. the “Fusion” portion don’t detonate unless the first stage has been propperly ignited. While Lithium Deuteride (the second stage fusion fuel) is not safe to handle (corrosive and explodes on contact with water) it’s not going to cause a blast comparable to even a fision bomb.