This book reviews toxicity documents on five chemicals that can be released in the air from accidents at chemical plants, storage sites, or during transportation. The documents were prepared by the National Advisory Committee on Acute Exposure Guideline Levels for Hazardous Substances and were evaluated for their scientific validity, comprehensives, internal consistency, and conformance to the 1993 guidelines report.

HIDE AND SEEK Terrorists have hidden a massive bomb in Detroit, but the White House and local police have no idea when and where it's going to go off. One thing is certain, thousands will die in the explosion unless Mack Bolan can intercept the device before time runs out. As each lead results in more dead bodies but surprisingly little intel, Bolan is convinced that this is a well-planned venture and that he and the police are mere pawns in the mastermind's scheme. But that's about to change. Tired of being led on a wild-goose chase and with the clock counting down, the Executioner is shifting the rules of the game—the hunter is about to become the hunted.

Diplomatic Ammunition Minutes after his arrival in Madagascar, the U.S. Secretary of State gets kidnapped by a terrorist organization, and the White House goes on red alert. Unable to stage a rescue without causing an international incident, the President turns to the one man who can get the politician out alive. But this time Mack Bolan won't be working alone. Dodging bullets at every turn and hunted by an assassin as dangerous as he is, Bolan partners with an operative from his past to help him track the captors. But nothing is what it seems in Madagascar. The lines between traitor and rogue are not only blurred, they make a deadly combination…especially when it comes to trust and betrayal. As the ransom clock counts down, the Executioner will need to employ every stealth move he knows to get the secretary—and himself—out of the island nation alive.

BORDER RUN When a Mexican national captures the murder of an innocent couple on video, Mack Bolan is tasked with protecting the young man and delivering his evidence to authorities. But then the killer turns out to be a high-powered cartel boss intent on destroying any trace of his crime—including the witness. Suddenly the man with the video is running for his life, and Bolan has no choice but to join the chase. A hired assassin and his army of trained killers outnumber Bolan in the unfamiliar Mexican territory, and he must rely on quick thinking and guerrilla-style tactics to wipe out the enemy and ensure the safety of the one man who can shutter the gang's operations for good. The cartel is fighting dirty, but the Executioner is about to lay down his signature brand of cleansing fire.

Millions of Americans use e-cigarettes. Despite their popularity, little is known about their health effects. Some suggest that e-cigarettes likely confer lower risk compared to combustible tobacco cigarettes, because they do not expose users to toxicants produced through combustion. Proponents of e-cigarette use also tout the potential benefits of e-cigarettes as devices that could help combustible tobacco cigarette smokers to quit and thereby reduce tobacco-related health risks. Others are concerned about the exposure to potentially toxic substances contained in e-cigarette emissions, especially in individuals who have never used tobacco products such as youth and young adults. Given their relatively recent introduction, there has been little time for a scientific body of evidence to develop on the health effects of e-cigarettes. Public Health Consequences of E-Cigarettes reviews and critically assesses the state of the emerging evidence about e-cigarettes and health. This report makes recommendations for the improvement of this research and highlights gaps that are a priority for future research.