There are an estimated 110 million landmines in the ground in over 30 countries. From 1999 to 2014 they caused 63,358 civilian casualties (50% children) and the cost of removal averages from $300-1,000 apiece.
Detecting IEDs is equally hard because most are buried. Between 2011 and 2016, the over 132,000 casualties resulting from IEDs outweighed the civilian harm caused by all other weapon types combined. The Pentagon has spent over $19 billion to find a better detection method; however, the best approach remains bomb-sniffing dogs.
Scrutiny and security planning is expanding rapidly for large event venues like stadiums or where large items can pass into countries such as shipping containers entering ports. There are approximately 4773 stadiums worldwide, and 200+ countries have ports open to container ships, with 10,000 liner ship (un)loads per week.
