Field Manual 12–50, U.S. Army Bands, dated October 1999, Appendix A, Official And Ceremonial Music, Appendix A, Section 1 – Ceremonial Music, Paragraph A-35 "A-35. Signals that unauthorized lights are to be extinguished. This is the last call of the day. The call is also sounded at the completion of a military funeral ceremony. Taps is to be performed by a single bugler only. Performance of 'Silver Taps' or 'Echo Taps' is not consistent with Army traditions, and is an improper use of bugler assets."