"Will the visor reflect the light into my eyes?"

No. When installed correctly, any light that gets caught by the visor is wrapped harmlessly away from the wearer's eyes.

"Will a light on my helmet just get tangled up in a fire?"

The Blackjack's patented under the brim design, with multiple points of contact, all but eliminates this hazard. When installed correctly, the Blackjack presents less of a profile than most visor mount assemblies.

"Can I mount the Blackjack on top of the brim?"

Yes, but by mounting the Blackjack "upside down" the wearer instantly creates a snag factor that is not normally present.

"Will putting a light on my helmet make it tilt to one side?"

The Blackjack's patented design brings the weight of the light and the bracket closer to the centerline of the helmet where the weight is easily dissipated by the mass of the helmet. Most wearers do not realize it is on the helmet.

"Does putting a light on my helmet void my warranty, or it's a violation of NFPA standards?"

No because the Blackjack does not penetrate the brim of the helmet, and due to The Blackjack's patented multipoint contact design it causes no damage. Blackjack has letters of consent from all the major helmet manufacturers (see below). Additionally, the NFPA standards do not address helmet light brackets NFPA 1971 2000

1.1.5 | This standard shall not specify requirements for any accessories that could be attached to the certified product, but are not necessary for the
certified product to meet the requirements of this standard.

4_8.1 | Any accessory attached to any element of the protective ensemble shall not interfere with the function of the element or with the function of any of the
elements component parts.

4_8.2 | Any accessory attached to any element of the protective ensemble shall not degrade the desired protection or performance of the element below the
requirements of this standard.
 

Please see NFPA Helmet Compliance Letters:

Bullard
Cairns
Lion Apparel
Phoenix Technology

"Will the light and or Bracket will interfere with my visor/goggles?"

When mounted correctly, the Blackjack and light will not interfere with the any visor currently in use today. All goggle mounts can be adjusted to accommodate the Blackjack with one exception, the Bullard Blade System.