Yeah ... I went back to Doug's review article:
http://www.equipped.org/rescuelaser.htm2 AA Mini-Mag: 6 miles
1 AAA Pelican MityLite: 9 miles
2 AAA Pelican MityLite: 12 miles
2 AA Pelican MityLite (21 lumens): 15 miles
Surefire 6P (80 lumens): 25 miles
Red Rescue Laser: 22 miles; 28 miles w/ Night Vision Goggles (NVG)
Green Rescue Laser: 30 miles; NVG not tested
The small 1xCR123 Fenix PD20 is listed at 9/47/94/180 lumens for 35/6.5/2.6/1 hours.
The Red Rescue Laser runs for 40 hours.
That would suggest to me that the Fenix PD20 on medium (47 lumens) has about the same visibility and total battery life as the Red Rescue Laser.
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