April 2026
A Tier A-Overview B Tier B-prevention insights C Tier C-advanced analysis D Full dossier
Location type
🏫 School/Campus
🏛️ Government/Public
🎟️ Venue/Event
🏨 Hospitality/Hotel
🏬 Commerce/Retail
✈️ Transit/Airport
🚇 Transit/Metro
🏠 Residential
🏢 Workplace/Office
⛪ House of Worship
🔒 Detention/Justice
📍 Other/Complex
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
2
3
4
Assassination of Martin Luther King Jr. (1968)
5
6
7
8
9
10
11
Djerba synagogue bombing (2002)
12
13
14
15
Boston Marathon bombing (2013)
16
Virginia Tech shooting (2007)
17
18
Dahab bombings (2006)
19
Oklahoma City Bombing (1995)
Waco Siege Ends (1993)
20
Columbine High School Attack (anniversary context) (2000)
Columbine High School Attack (1999)
21
Sri Lanka Easter bombings (2019)
22
Nashville Waffle House shooting (2018)
23
24
25
26
27
28
29
30