Here are two links from the Sochi Paralympic Games. These folks are visually impaired, but have guides talking them through various Nordic Ski obstacles, where after having to cross country ski a click+, they then have to sire laser rifles and hit their targets. Listen to the back ground commentary (06:00- 12:00), which explains the mechanics of what they're doing better than I can.
Links at: <script height="548px" width="900px" src="http://player.ooyala.com/iframe.js#ec=Fxc2YybDpruqNZ_NuGs3azLtRI3YKyCs&pbid=5c89505c6ef6468c9ceea84e35d1e344"></script>
or
http://www.teamusa.org/Video/2014/03/08/Sochi-2014-Paralympic-Winter-Games-Biathlon--Mens-75km--Visually-Impaired#ooid=Fxc2YybDpruqNZ_NuGs3azLtRI3YKyCs (http://www.teamusa.org/Video/2014/03/08/Sochi-2014-Paralympic-Winter-Games-Biathlon--Mens-75km--Visually-Impaired#ooid=Fxc2YybDpruqNZ_NuGs3azLtRI3YKyCs)