? There are actually a myriad of interlocking protocols that help to thwart such activities, to ignore them is not reasonable. Most poignantly there is literal

? There are actually a myriad of interlocking protocols that help to thwart such activities, to ignore them is not reasonable. Most poignantly there is literally an Ammonium Nitrate security program. [1] As for the 'number of truck bombings being zero' ... it did happen and the average is 'more than zero' and when we consider the implications (an entire building and 100's of dead etc.) it's a concern. Obviously, it's hard to determine the effectiveness of the various programs because they all play a part, but that there haven't been any such bombings since then is at likely a positive sign. [1] https://www.cisa.gov/ammonium-nitrate-security-program https://www.cisa.gov/ammonium-nitrate-security-program