Although that's both a good thing and a bad thing. Good, because it means the story is fast-paced, action-filled, and builds to a rewarding and explosive climax that you can just imagine being shown on the silver screen. Bad, because - like most Hollywood blockbusters - the plot is a bit too formulaic, so there's no major surprises to be had along the way. But don't let that put you off; this is still a thumping good read by any standards. The plot is nicely involved, there's a good strong cast of characters, and the whole thing seems well researched and as believable as such a story could be.
Perhaps one minor annoyance is the reference to ficticious technologies and their associated terminology - which can come across as a bit out of place and interrupt the novel's flow. I suppose this is somewhat unavoidable as the story needs to be set slightly in the future (maybe 20 years or so, although this is never explicitly stated) but terms such as 'lapbot' - a futuristic laptop computer - and fantastic inventions such as Head-Up Displays on car windscreens can tend to grate after a while. However DuBois does show a decent amount of restraint so thankfully this isn't too much of a problem.
When all's said and done, if you like the big action thrill-fests such as Air Force One, Top Gun, or the Die Hard series, you'll get plenty of enjoyment from Six Days. Definitely worth taking on holiday for an interesting read on the beach before you crack out Tom Clancy's latest tome.