Mac Walker's Rules of Engagement: SHOOT FIRST. KICK BODY. REPEAT. Former Navy SEAL sniper and government gun for hire Mac Walker finds himself in an uneasy alliance with the beautiful and mysterious Vatican operative Stasia Wellington as they struggle to save the plane's passengers and defeat the terrorists and their plot to kill tens of thousands. Mac Walker's 40,000 Feet is the first volume in the highly popular Mac Walker military thrillers series that has earned an enthusiastic following of fans as they cheer the never give in and never give up nature that embodies the Mac Walker character.

"You are the protector." So Mac Walker is told in this fast-paced thriller that has the special ops veteran scrambling to stop a brutal attack by a group of jihadi terror cells on America's most innocent and vulnerable. The action unfolds in the space of just 72 hours and will push the always determined Mac Walker to both the physical and mental limits of his considerable abilities. "If you enjoy Brad Thor and his Scot Harvath character, you will LOVE D.W. Ulsterman's Mac Walker. It's gritty, action-packed, and believable. D.W. Ulsterman creates a world of greater scope than does Thor, with implications effecting the present and the future." -BIG TEXAS

After Benghazi, Mac Walker, former Navy SEAL gun for hire, returns to the United States only to find his own government now seeking to silence him for what they believe he knows. http://dwulsterman.com/

The United States is gone. Hidden isolated in Alaskan interior wilderness is tiny Dominatus. A small diverse group want simple lives of personal liberty, but face termination under the oppressive deadly New United Nations. They will fight and die for freedom. Officer Denny warns "These people are serious business Mac, don't f-k with them."

Survivors of Dominatus Alaska trek across former Canadian provinces for a priest and weapon against military drone domination of the New United Nations globalists. Can they help emerging Texas Resistance? Can Mac Walker, facing the greatest enemy of his life, finish a final mission?

"Killing another human being isn’t so hard. It’s the forgetting. After a while, the faces of those you’ve killed tend to sneak up on you. Sometimes it’s in a dream. Other times you might be sitting in a crowded coffee shop and have a nagging sense of familiarity from the person taking your order. Each death is another haunting, another memory, another bit of subconscious weight added to one’s being. For Mac Walker, that weight was never so great as when he killed that child." Author D.W. Ulsterman offers readers another glimpse into the very popular character of former Navy SEAL Mac Walker in this short story that takes place in a war torn region of Sudan where Mac must come to terms with who he has become, and who he may one day be...

“That bear was just doing what any of us would - trying to survive. It was either him or me. We both understood that. He was long in the tooth, but still had plenty of bite. I hope to be half the fighter he was when my own time comes. No hard feelings between us. Just two warriors doing what comes natural – kill or be killed.” \-Mac Walker