A lot of news photographers don't think that they are allowed enough time to light pictures, so they rely on their hot shoe mounted flash or on moving their subject into the daylight. If your kit is lightweight and well planned, if it's reliable and quick to assemble then you can light as much of your work as you want to. I tend to specialize in editorial portraiture, so that is the area of work that I'm going to talk about.
When I was writing these pages my basic kit was one Lumedyne 200 joule pack, one Signature head, two regular batteries, one stand, an umbrella, a Chimera softbox and a Pocket Wizard kit - all in one sling bag. Since May 2009 that all changed and the Lumedyne kit was replaced by an Elinchrom Ranger Quadra system. I still like the Lumedynes but the Elinchrom is a few percentage points better!
In October 2003 I added an Umbrella Box to my kit in the hope of replacing two light modifiers with one, which has worked in some ways but I have to confess that I go through phases of using each of the light modifiers for a while and then switching