The Speed Of Sound L-R Kevin Roache, Ann-Marie Crowley, John Broadhurst, John Armstrong (phot credit Shay Rowan) pic16

The Speed Of Sound L-R Kevin Roache, Ann-Marie Crowley, John Broadhurst, John Armstrong (phot credit Shay Rowan) pic16

The Speed of Sound. L-R Kevin Roache, Ann-Marie Crowley, John Broadhurst, John Armstrong (photo credit Shay Rowan)