The-Speed-Of-Sound-L-R-Ann-Marie-Crowley-John-Broadhurst-Kevin-Roache-Henry-Armstrong-John-Armstrong.-photo-credit-Shay-Rowan The-Speed-Of-Sound-L-R-Ann-Marie-Crowley-John-Broadhurst-Kevin-Roache-Henry-Armstrong-John-Armstrong.-photo-credit-Shay-Rowan