I live in Israel. Some days the work gets cut by a siren, a quick move to the stairwell, and the long effort afterward of finding the thread again. This is not a piece about bravery. It is a short note about what repeated interruption does to attention, judgment, and the small habits that start mattering once disruption becomes background.
Stress changes the shape of work before the schedule
From the outside, a workday under threat can look almost normal. The calendar is still there. The laptop still opens. Messages arrive with the same cheerful confidence they had yesterday. The change shows up somewhere less visible first.
Attention fragments faster. Working memory gets shallower. Sleep degrades, which makes patience thinner and context switching more expensive. WHO's current guidance on mental health in emergencies is useful partly because it is plain. Anxiety, sleep problems, fatigue, irritability, and difficulty concentrating are common. That alone is enough to rearrange a day, before anyone starts speaking in clinical language.
The cost of interruption is not the siren itself. The cost is the ruined cognitive thread afterward.
What teams misread
A few things are easy to misread when people are working under repeated alarms.