The hospital where my office sits has over a thousand Muslims working every day saving people's lives

The Glasgow airport bombers included hospital doctors.
The London bombers included school workers.
Their colleagues had no idea they were militants.

Although this pair were known to security as militant would-be jihadists, they could not monitor them because there are "thousands" such known to them.

As Islamic terrorists go, these were remarkably restrained.
All previous have tried to kill as many people as possible.