The reason is not simply that the devices may catch fire, it's also because terrorists could then exploit any such design flaws that makes such devices prone to catching fire or exploding. All you need let a plane crash is to start a fire that cannot easily be put out, alkali metals are ideal for this purpose. We must keep this in mind when considering the arguments in Damon's answer.

The reason is not simply that the devices may catch fire, it's also because terrorists could then exploit any such design flaws that makes such devices prone to catching fire or exploding. All you need let a plane crash is to start a fire that cannot easily be put out, alkali metals are ideal for this purpose. We must keep this in mind when considering the arguments in Damon's (otherwise excellent) answer.

The reason is not simply that the devices may catch fire, it's also because terrorists could then exploit any such design flaws that makes such devices prone to catching fire or exploding. We must keep this in mind when considering the arguments in Damon's answer.

The reason is not simply that the devices may catch fire, it's also because terrorists could then exploit any such design flaws that makes such devices prone to catching fire or exploding. All you need let a plane crash is to start a fire that cannot easily be put out, alkali metals are ideal for this purpose. We must keep this in mind when considering the arguments in Damon's answer.