Alex Lifeson, left, and Geddy Lee of Rush perform at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Alex Lifeson of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Alex Lifeson of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Neil Peart of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Geddy Lee of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Alex Lifeson of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Alex Lifeson of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Geddy Lee of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Neil Peart of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Geddy Lee of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Geddy Lee of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Alex Lifeson of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Geddy Lee, left, and Neil Peart, on drums, of Rush perform at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Alex Lifeson of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Geddy Lee of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Alex Lifeson, left, of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Neil Peart of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Geddy Lee of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Geddy Lee of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Fans watch as Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto

Geddy Lee of Rush performs at the MGM Grand Garden Arena as part of their "R40 Live 40th Anniversary Tour" in Las Vegas on Saturday, July 25, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto