9,000 rounds of 155mm artillery fire.
That's what it cost Bob Nerbovig to master the art of calling fire. Four years
in the Mojave Desert with the 4th Battalion, 11th Marines. Four years of ground-
slap and concussive force that shattered his inner ear and left a permanent
ringing in his skull.
In December 1964, he thought he was done.
But when Sergeant Miller asked him to return, to train the young Marines heading
to Vietnam, to teach them how to hear through static and call coordinates that
could save lives, Nerbovig knew he couldn't say no.
The Iron Pigs were going to war. The massive M114 howitzers were heading to the
Rocket Belt around Da Nang, where the jungle was so thick it swallowed sound and
the enemy so close that every fire mission was danger close. Where a single
transposed digit meant friendly fire. Where illumination rounds were the
difference between seeing the enemy and being overrun in the darkness.
Nerbovig's damaged ears, his vertigo, his constant ringing, his inability to
find level, became both his greatest liability and his most vital asset. Because
he knew what these young radio operators needed to learn: that artillery isn't
about destruction. It's about precision. It's about putting steel exactly where
it's needed, when it's needed, to bring Marines home alive.
This is the story of the men who never fired a rifle but whose voices on the
radio saved countless lives. It's about invisible wounds and visible courage.
It's about the brutal, life-saving music of the guns.
THE IRON PIGS: The story of the Steel Symphony.
