Man Uses Homemade Sonar Device To Solve Cold Cases by Fox 28 Spokane | @ | August 22, 2024 9:54 am TwitterFacebookGoogle+LinkedInPinterest Already helping 4 families in the past 6 months, this man has created a way to help solve cold cases by using a sonar device he created for water-based investigations. Click the video for more details. Related Posts Twin Sisters Turn 102 Years Old Three-year-old Receives Custom Baseball Glove 82-year-old Says Teaching Is Her God-given Job