Glenna's father was a firefighter for years. Early in his career, he almost died in a house fire. The man who saved his life turned into a forever friend — and someone Glenna's family will always cherish.

Do you have your own story of an unsung hero? We'd love to hear it! Record a voice memo and email it to us at myunsunghero@hiddenbrain.org.

Some guidance:

--Focus on ONE moment that you will never forget.

--Make sure you're in a quiet, non-echoey room.

--Speak conversationally, like you're talking to a friend.

--Let us know why this person continues to impact your life.

--If your hero were standing in front of you today, what would you say? Address them directly.

One evening after class, Ellen took public transportation home. It was a quiet night, and when she got off at her stop, there weren't many people around. Then, she heard something that alerted her to potential danger.

Do you have your own story of an unsung hero? We'd love to hear it! Record a voice memo and email it to us at myunsunghero@hiddenbrain.org.

Some guidance:

--Focus on ONE moment that you will never forget.

--Make sure you're in a quiet, non-echoey room.

--Speak conversationally, like you're talking to a friend.

--Let us know why this person continues to impact your life.

--If your hero were standing in front of you today, what would you say? Address them directly.

More than 40 years ago, Paul's father began to show signs of cognitive decline. As a result, he lost job after job. When his father was formally diagnosed with Alzheimer's disease, a small local firm made him an offer that helped restore his dignity.

Do you have your own story of an unsung hero? We'd love to hear it! Record a voice memo and email it to us at myunsunghero@hiddenbrain.org.

Some guidance:

--Focus on ONE moment that you will never forget.

--Make sure you're in a quiet, non-echoey room.

--Speak conversationally, like you're talking to a friend.

--Let us know why this person continues to impact your life.

--If your hero were standing in front of you today, what would you say? Address them directly.