Like any massive bureaucracy federal agents have processes and policies to determine what tactics are used. Night raids may pose a higher risk of alerting the t

Like any massive bureaucracy federal agents have processes and policies to determine what tactics are used. Night raids may pose a higher risk of alerting the target and allow them to flee or fight from a fortified position. A person like this is far more likely to have alarms, booby traps, gas masks, and weapons stockpiles than your average citizen. Don't forget that in the US it's relatively easy to get a wide range of extremely powerful weapons. Also the target seems to have known they were being surveilled and may have been fleeing. This may have been the agents last best chance. There's also confirmation bias at work: a raid isn't high profile unless it's big and flashy and potentially violent. You hear more often about violent raids than quiet arrests. Even if they're reported as frequently, quiet arrests are just less memorable.