Funeral customs
http://www.arlingtoncemetery.net/customs.htm
Whenever outside, and when the coffin passes by, uniformed members render a hand salute. But I'm not sure if it was because the coffin was draped in the Flag and you are honoring the Flag, or to pay respect for the dead. Since I haven't been to a funeral with cremains, I don't know if the flag is pre-folded and presented, or if it gets folded as part of the ceremony, so I don't know whether you would be saluting cremains as they pass by you if not draped by a Flag, and I can't quite visualize how that Flag would be presented if not yet folded.
You render a salute during the playing of Taps. The movement to salute is normally done at about 1/2 speed, as is the return to attention at the completion of Taps.
If accompanied by three rifle volleys, I've seen spent shell casings collected and some or all of the following been performed (depending on service):
- A spent casing placed in the folds of the Flag so it is permanently folded up in the Flag.
- Spent casings collected and presented to the family for distribution as they see fit.
- Spent casings collected, polished, and presented later in a small wooden box (typically with a unit coin or service emblem affixed to the top of the box), along with a note. This is usually done w/ active service members and presented by the CO. (I work w/ a former Brigade Commander who had over 40 KIAs during their deployment to Iraq, and he was very specific in his guidance to the rear det on how to conduct funerals.)
- Nothing at all. (probably not an issue at Arlington, but at some of the more remote burials, it is best to discreetly ask the person in charge of the Honor Detail to save the casings to give to the family.
Hope this helps.