In this column, BI&T features questions and answers between AAMI members and George Mills, director of engineering at The Joint Commission. Become part of the discussion and ask questions about those subjects that matter most to you. You can submit your question at www.aami.org/askgeorge. Or to join AAMI's Joint Commission discussion group, which is open to all AAMI members, visit www.aami.org/communities. Some of the questions and answers may have been edited for space, style, and clarity.