TUCSON, Ariz. (13 News) - A silent threat, and an invisible enemy.

For two sisters from Oro Valley, a medical scare for one became a life-saving discovery for the other.

For Brain Aneurysm Awareness Month, they’re sharing their story of survival in hopes of bringing this overlooked condition to the forefront.

It was the summer of 2021, and Jamie Hernandez had just graduated from ultrasound technician school.

“It was supposed to be a happy time,” Jamie said.

She explained that it was normal for her to get headaches during school. She brushed it off as stress, until some other symptoms arose.

“I started losing sensation in my left arm. It almost felt like somebody had sat on it, so it was getting really tingly, and my blood pressure was sky high,” Jamie said.

She decided to go to the

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