"Having a Baby" joke

My father, an Army major, was conducting a field test when
communications went dead. Immediately, he jumped into a
jeep and ordered a sergeant to speed to the command
station.
When my father and the sergeant ran in, the group cheered
their arrival. The commanding officer then stepped forward
and shook my father's hand.
"Don't congratulate me, sir," my father said modestly as he
pointed to his driver. "It was all the sergeant's doing."
The commanding officer nodded and turned to the sergeant.
"Congratulations," he said. "The major's wife just had a baby
girl."