You carry a basic First Aid Kit, right? What light is in it? Why did you choose that light?For my small FAKs, there’s a single-cell AAA (Gerber Tempo, Fenix E01, Coast G10, etc.) and a penlight (normally a $3 Rayovac single AAA). For the larger FAKs and trauma kits, there’s a headlight, the same WalMart penlight mentioned, and a single AA light (a $15 Energizer or a $8 Brinkmann) with a diffuser.