I have some Truecrypt volumes stored on my USB drive and I would like to know if they are safe from being cracked by the FBI or any government agencies? Some people say Full Disk Encryption will prevent the FBI from snooping through your files but I would like to know if Truecrypt volumes are just as safe and can provide enough protection from your files being accessed. I know about dictionary attacks, bruteforce attacks, and cold boot attacks. But with a strong password be enough for the FBI not to get into my files? Also, how do I prevent a cold boot attack on a Truecrypt flash drive volume? Some say making a volume itself is not safe and government agencies will still access your files and you should use full disk encryption instead, but I wanna know if that is the case or not. Thanks.